---
product_id: 231121732
title: "Fitbit Charge 4 Black Advanced Fitness Tracker"
brand: "fitbit"
price: "₨104022"
currency: LKR
in_stock: true
reviews_count: 8
category: "Fitbit"
url: https://www.desertcart.lk/products/231121732-fitbit-charge-4-black-advanced-fitness-tracker
store_origin: LK
region: Sri Lanka
---

# Water resistant up to 50 meters for swimproof durability Built-in GPS for precise route tracking Up to 7-day battery life for uninterrupted use Fitbit Charge 4 Black Advanced Fitness Tracker

**Brand:** fitbit
**Price:** ₨104022
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your fitness game with the all-in-one Charge 4 — because your health deserves precision and style.

## Quick Answers

- **What is this?** Fitbit Charge 4 Black Advanced Fitness Tracker by fitbit
- **How much does it cost?** ₨104022 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/231121732-fitbit-charge-4-black-advanced-fitness-tracker)

## Best For

- fitbit enthusiasts

## Why This Product

- Trusted fitbit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Active Zone Minutes:** Get real-time buzz alerts when you hit your fat burn, cardio, or peak zones—stay motivated every step.
- • **Sleep Stage Tracking:** Understand your rest cycles to optimize recovery and daily performance.
- • **Precision GPS Mapping:** Track your runs and rides with pinpoint accuracy—no phone needed.
- • **All-Day Heart Rate Monitoring:** Unlock deeper health insights with 24/7 personalized heart rate zones.
- • **Seamless On-the-Go Convenience:** Contactless Fitbit Pay and a week-long battery keep you moving without interruptions.

## Overview

The Fitbit Charge 4 Black is a sleek, swimproof fitness tracker featuring built-in GPS, continuous heart rate monitoring, sleep stage tracking, and Active Zone Minutes to optimize workouts. With up to 7 days of battery life and Fitbit Pay, it offers convenience and motivation for professionals seeking data-driven health insights on the go.

## Description

Fitbit Charge 4 Fitness TrackerWith Fitbit Charge 4, there’s no limit to how far you can go. This sleek, swimproof tracker is packed with features that help you know your workouts and your body better—like built-in GPS, Active Zone Minutes, a new exercise mode and sleep tracking. Plus, with Fitbit Pay and up to 7-day battery, you get more convenience on the go and more inspiration to reach your fitness goals.**Water resistant to 50M.​ ​Battery life varies with use and other factors;​ up to 5 hours with continuous GPS.Product Features:24/7 HEART RATE - Use 24/7 heart rate to better track calorie burn, optimize workouts and uncover health trends that inspire you to make moves on your health and fitness goals.RESTING HEART RATE - Wear Fitbit Charge 4 all day and night to record and reveal your resting heart rate, track heart rate trends over time, and follow your health and fitness progress.HEART RATE ZONES - Now heart rate zones are personalized based on your age and resting heart rate, so when you’re exercising you get a more accurate understanding of how hard your body’s working.WORKOUT INTENSITY MAP - IN APP ONLY - After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route and learn where you put in the most effort.ACTIVE ZONE MINUTES - With new Active Zone Minutes, your tracker buzzes when you reach your target heart rate zones during exercise, and celebrates when you earn extra minutes outside of exercise.

Review: 5* for the device. 0* for Google. Not for instantaneous data. - I had a charge HR fitbit from 2016 until 2022, which worked perfectly. After a few years the band (not replaceable) came off, and I re-glued it, device still worked perfectly. In 2022 I decided to upgrade to the Charge 4 due to SpO2, sleep stage, etc. monitoring. The Charge 4 has worked perfectly since then. My only complaint is the band, which is stiff and not too comfortable (I wear it 24/7/365). That was solved by use of a fabric velcro wrap band (AVOD, reviewed elsewhere). Since I got that band I absolutely love the Charge 4. I bought more as backups, but they haven't been needed. Gave one to my wife, who likewise likes it. There are some caveats about accuracy, which I'll discuss in a minute, but I find them not to be an issue as long as you're aware of them. My issue is Google, which bought Fitbit. Before that, everything worked like clockwork. Give username, password, log into Fitbit, use app, stay logged in for months, easy-peasy. But for a couple of months Google is telling me that as of 2/2/2026 I can no longer use the app unless I switch the account to Google. No more email login. OK, pain in the butt, but OK. EXCEPT: The link Google gives DOES NOT WORK. It tells me my email is "already in use for a different device" so I can't move it. [the Charge, maybe? Who knows. They give zero details, and zero ways to remediate.] They also won't let me move it to a new email. Zero stars for the Google experience is too generous. My "backup plan" is to use one of the brand new Charge 4s and try to set it up on Google when they shut off "my" three year old one. Based on the experience so far, I give that about a 5% chance of working, but if it does, I'll try to update the review. [Or if a miracle happens and I can get the current one switched to Google.] So: Charge 4, top notch except limitations below. Google: For such an advanced outfit with so many brilliant people and such great AI and search, their customer interface on this SUCKS. Accuracy limitations/caveats on Charge 4. Basically, I have found it to be extremely accurate, but there are limitations. When you first stand up and walk, it misses the first few steps...several more than the Charge missed. Not really an issue. I might miss 50 steps a day that way. If your only "walking" is moving from a couch to an electric wheelchair, you might lose a good fraction of your few steps. If you take walks, it is with 1% of GPS distance. And the step count is extremely accurate. If I manually count steps walking around the house, it's within 1 or 2% of the manual count. A+ on that. [Likewise, if I run on a treadmill, it agrees with the treadmill within 1-2%] It does NOT, in general, for me, respond to wrist motions as "steps" although you can learn to move your wrist in such a way as to make it sometimes count a "step". I find that a non-issue. If I get a dozen fake steps a day from wrist motion, it balances the steps I miss when first standing up/walking. A+ overall on distance, steps. Pu;se rate: There is an issue with pulse rate. The issue is that when it changes dramatically (say from walking to running) the pulse registered is inaccurate. If I go from walking around the house to running up and down stairs, for example, the Charge 4 will tend to read about 20 beats/min high. It will record random spikes of 50 beats too high, so the "max" pulse during exercise needs to be taken with a grain of salt (pulse rate based on comparison to pulse oximeter or ECG heart rate monitor). But, if I sit in a chair, or walk at a steady pace, the fitbit, pulse oximeter, and the ECG all agree (again, 1-2%). I sleep with a pulse oximeter every night, the Charge 4 is within one or two beats of the pulse/ox every night. It averages a fraction of a beat different. A+ for accuracy on pulse WHEN you are in a steady state condition, particularly resting. So: Don't trust the instantaneous pulse readout IF you have just changed level of exertion. Don't trust the spikes. Otherwise, pretty good. Calories: Fitbit Calories are based on pulse rate, so the errors in pulse rate tend to overstate calories burned. I keep a record of calories based on distance walked, run, basal metabolism, etc. and the Charge 4 tends to overstate daily calorie burn by 20% or so, for me. You could determine how much it is for you, and if you like, adjust the number. For a given exercise session, the numbers are roughly credible say 10-15% of independent measurement, sometimes right on the independent measurement. That's all close enough for me. YMMV. Sleep: I had a professional sleep study under medical supervision. I wore my pulse/ox and the Charge 4 at the same time. As mentioned, the Charge 4 agrees with my pulse ox for pulse rate overnight, and is pretty close (tends to be 1-2% low) on SpO2. My pulse/ox (Sleepu) and Charge 4 likewise agreed with average pulse and SpO2 from the professional study (2% ish difference). Remarkably, I thought, the SLEEP STAGE durations reported by the Charge 4 were close (to my mind) to the professional device, which has far more input data. The Charge 4 underestimated Deep Sleep by 25% or so, but showed each stage at the time the professional unit showed it. I considered that to be pretty amazing. Overall: Fabulous for a cheap device with such limited input. Will be sorry to lose it to Google's messing about.
Review: Inaccurate in every way - I work in a hospital and have access to a ton of devices that accurately measure heart rate, in addition to simply counting my HR with a stopwatch. Upon comparison Charge4 is off by 15 to 20% about most of the time and has inexpiable spikes that claim my HR is 200% or more higher than it actually is that last minutes at a time. The pedometer picks up normal hand movements as steps. After spending 6 hours on the couch and only getting up 3 times it claims I have gone up 9 flights of stairs and walked over 7000 steps equaling over 3 miles. Even rotating your wrist to get the display to turn on can sometime count up multiple steps. The health metrics in the app are largely based upon heart rate and steps taken. When both of these are wildly inaccurate it cannot give you a clear picture of even the number of calories you have burned in a day much less anything more in depth. The sleep metrics are a cute idea but largely anecdotal and not really useful as the advice they foster from the app are the exact same suggestions you would tell every single person in the world regardless of their specifics as to what will give them the best sleep. Keep a regular bedtime, don't work out right before bedtime, etc... The never-on-when-you-need-it display that is invisible in sunlight is not a big selling point either. And the cherry on top? Tech support's only suggestion was to try restarting the watch followed by absolute silence and zero help or suggestions. This thing fails spectacularly.

## Features

- Measures Calories Burned And Heart Rate
- Comprehensive Monitoring
- Sleep Tracking
- Built-in GPS

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08GYSZJBV |
| Additional Features | Heart Rate Monitor, Sleep Monitor, GPS, Calorie Tracker, Daily Workout Memory |
| Age Range Description | Adult |
| Band Color | black |
| Band Material Type | Silicone |
| Band Width | 22 Millimeters |
| Battery Average Life | 7 days |
| Battery Cell Composition | Lithium Ion |
| Battery Cell Type | Lithium Ion |
| Battery Charge Time | 2 Hours |
| Best Sellers Rank | #42,480 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #164 in Activity & Fitness Trackers |
| Brand | Fitbit |
| Case Material Type | Resin |
| Color | Black |
| Communication Feature | True |
| Compatible Devices | Smartphone |
| Connectivity Technology | Bluetooth, NFC |
| Controller Type | Android |
| Customer Reviews | 3.7 out of 5 stars 1,511 Reviews |
| Display Type | LED |
| GPS Geotagging Functionality | Built-in GPS |
| Human Interface Input | Touchscreen |
| Item Dimensions | 1.65 x 4.06 x 8.86 inches |
| Item Weight | 0.03 Kilograms |
| Manufacturer | Fitbit |
| Memory Storage Capacity | 6400 MB |
| Metrics Measured | GPS,Optical Heart Rate Sensor |
| Model Name | charge 4 |
| Model Number | FB417BKBK |
| Operating System | Android |
| Resolution | 240 x 280 |
| Screen Size | 1.5 Inches |
| Shape | Rectangular |
| Special Feature | Heart Rate Monitor, Sleep Monitor, GPS, Calorie Tracker, Daily Workout Memory |
| Sport Type | Fitness |
| Style Name | Classic |
| Supported Application | Calendar, GPS, Sleep Monitor |
| Supported Satellite Navigation System | GPS |
| Target Audience | Unisex Adult |
| Warranty Type | Limited |
| Water Resistance Depth | 50 Meters |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Activity Tracker |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | du |

## Product Details

- **Battery Cell Composition:** Lithium Ion
- **Brand:** Fitbit
- **Connectivity Technology:** Bluetooth, NFC
- **GPS:** Built-in GPS
- **Memory Storage Capacity:** 6400 MB
- **Operating System:** Android
- **Screen Size:** 1.5 Inches
- **Shape:** Rectangular
- **Special Feature:** Heart Rate Monitor, Sleep Monitor, GPS, Calorie Tracker, Daily Workout Memory
- **Wireless Communication Standard:** Bluetooth

## Images

![Fitbit Charge 4 Black Advanced Fitness Tracker - Image 1](https://m.media-amazon.com/images/I/61Bz2X5a52L.jpg)
![Fitbit Charge 4 Black Advanced Fitness Tracker - Image 2](https://m.media-amazon.com/images/I/614NRQMMOcL.jpg)
![Fitbit Charge 4 Black Advanced Fitness Tracker - Image 3](https://m.media-amazon.com/images/I/41UbTLtYRqL.jpg)
![Fitbit Charge 4 Black Advanced Fitness Tracker - Image 4](https://m.media-amazon.com/images/I/71Ue1AtxnoL.jpg)
![Fitbit Charge 4 Black Advanced Fitness Tracker - Image 5](https://m.media-amazon.com/images/I/71kQMj4cBzL.jpg)

## Questions & Answers

**Q: Does it come with a charger?**
A: It comes with a cord that you attach to your Fitbit and it has  USB plug on the other end.

**Q: How do I change the time**
A: You don’t have to. It changes automatically. Just like your phone.

**Q: Is this compatible with a Samsung S10 128gig?**
A: Yes

**Q: Does this calculate how many calories you intake from eating and drinking?**
A: No, it calculates how many calories you have burned off from your activity level.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5* for the device. 0* for Google. Not for instantaneous data.
*by S***T on January 2, 2026*

I had a charge HR fitbit from 2016 until 2022, which worked perfectly. After a few years the band (not replaceable) came off, and I re-glued it, device still worked perfectly. In 2022 I decided to upgrade to the Charge 4 due to SpO2, sleep stage, etc. monitoring. The Charge 4 has worked perfectly since then. My only complaint is the band, which is stiff and not too comfortable (I wear it 24/7/365). That was solved by use of a fabric velcro wrap band (AVOD, reviewed elsewhere). Since I got that band I absolutely love the Charge 4. I bought more as backups, but they haven't been needed. Gave one to my wife, who likewise likes it. There are some caveats about accuracy, which I'll discuss in a minute, but I find them not to be an issue as long as you're aware of them. My issue is Google, which bought Fitbit. Before that, everything worked like clockwork. Give username, password, log into Fitbit, use app, stay logged in for months, easy-peasy. But for a couple of months Google is telling me that as of 2/2/2026 I can no longer use the app unless I switch the account to Google. No more email login. OK, pain in the butt, but OK. EXCEPT: The link Google gives DOES NOT WORK. It tells me my email is "already in use for a different device" so I can't move it. [the Charge, maybe? Who knows. They give zero details, and zero ways to remediate.] They also won't let me move it to a new email. Zero stars for the Google experience is too generous. My "backup plan" is to use one of the brand new Charge 4s and try to set it up on Google when they shut off "my" three year old one. Based on the experience so far, I give that about a 5% chance of working, but if it does, I'll try to update the review. [Or if a miracle happens and I can get the current one switched to Google.] So: Charge 4, top notch except limitations below. Google: For such an advanced outfit with so many brilliant people and such great AI and search, their customer interface on this SUCKS. Accuracy limitations/caveats on Charge 4. Basically, I have found it to be extremely accurate, but there are limitations. When you first stand up and walk, it misses the first few steps...several more than the Charge missed. Not really an issue. I might miss 50 steps a day that way. If your only "walking" is moving from a couch to an electric wheelchair, you might lose a good fraction of your few steps. If you take walks, it is with 1% of GPS distance. And the step count is extremely accurate. If I manually count steps walking around the house, it's within 1 or 2% of the manual count. A+ on that. [Likewise, if I run on a treadmill, it agrees with the treadmill within 1-2%] It does NOT, in general, for me, respond to wrist motions as "steps" although you can learn to move your wrist in such a way as to make it sometimes count a "step". I find that a non-issue. If I get a dozen fake steps a day from wrist motion, it balances the steps I miss when first standing up/walking. A+ overall on distance, steps. Pu;se rate: There is an issue with pulse rate. The issue is that when it changes dramatically (say from walking to running) the pulse registered is inaccurate. If I go from walking around the house to running up and down stairs, for example, the Charge 4 will tend to read about 20 beats/min high. It will record random spikes of 50 beats too high, so the "max" pulse during exercise needs to be taken with a grain of salt (pulse rate based on comparison to pulse oximeter or ECG heart rate monitor). But, if I sit in a chair, or walk at a steady pace, the fitbit, pulse oximeter, and the ECG all agree (again, 1-2%). I sleep with a pulse oximeter every night, the Charge 4 is within one or two beats of the pulse/ox every night. It averages a fraction of a beat different. A+ for accuracy on pulse WHEN you are in a steady state condition, particularly resting. So: Don't trust the instantaneous pulse readout IF you have just changed level of exertion. Don't trust the spikes. Otherwise, pretty good. Calories: Fitbit Calories are based on pulse rate, so the errors in pulse rate tend to overstate calories burned. I keep a record of calories based on distance walked, run, basal metabolism, etc. and the Charge 4 tends to overstate daily calorie burn by 20% or so, for me. You could determine how much it is for you, and if you like, adjust the number. For a given exercise session, the numbers are roughly credible say 10-15% of independent measurement, sometimes right on the independent measurement. That's all close enough for me. YMMV. Sleep: I had a professional sleep study under medical supervision. I wore my pulse/ox and the Charge 4 at the same time. As mentioned, the Charge 4 agrees with my pulse ox for pulse rate overnight, and is pretty close (tends to be 1-2% low) on SpO2. My pulse/ox (Sleepu) and Charge 4 likewise agreed with average pulse and SpO2 from the professional study (2% ish difference). Remarkably, I thought, the SLEEP STAGE durations reported by the Charge 4 were close (to my mind) to the professional device, which has far more input data. The Charge 4 underestimated Deep Sleep by 25% or so, but showed each stage at the time the professional unit showed it. I considered that to be pretty amazing. Overall: Fabulous for a cheap device with such limited input. Will be sorry to lose it to Google's messing about.

### ⭐ Inaccurate in every way
*by N***B on July 11, 2021*

I work in a hospital and have access to a ton of devices that accurately measure heart rate, in addition to simply counting my HR with a stopwatch. Upon comparison Charge4 is off by 15 to 20% about most of the time and has inexpiable spikes that claim my HR is 200% or more higher than it actually is that last minutes at a time. The pedometer picks up normal hand movements as steps. After spending 6 hours on the couch and only getting up 3 times it claims I have gone up 9 flights of stairs and walked over 7000 steps equaling over 3 miles. Even rotating your wrist to get the display to turn on can sometime count up multiple steps. The health metrics in the app are largely based upon heart rate and steps taken. When both of these are wildly inaccurate it cannot give you a clear picture of even the number of calories you have burned in a day much less anything more in depth. The sleep metrics are a cute idea but largely anecdotal and not really useful as the advice they foster from the app are the exact same suggestions you would tell every single person in the world regardless of their specifics as to what will give them the best sleep. Keep a regular bedtime, don't work out right before bedtime, etc... The never-on-when-you-need-it display that is invisible in sunlight is not a big selling point either. And the cherry on top? Tech support's only suggestion was to try restarting the watch followed by absolute silence and zero help or suggestions. This thing fails spectacularly.

### ⭐⭐⭐⭐⭐ Plastic pegs snap off, Band doesn’t stay on after awhile
*by S***R on April 19, 2022*

I love Fitbits- have had two now and like the functionality of the app. I didn’t use mine for texting but was happy with the heart rate monitoring and step counting. However, after about 8 months, the plastic pegs that hold the bands on snapped off. This is the second time it has happened. First time, I bought the Fitbit at Costco and they gave me a full refund. I decided to take a leap of faith and order the same one here on Amazon (Costco was out of this version) and I liked how slender it was. Figured it was a fluke the first time, but it happened again. I contacted Fitbit customer service through the Fitbit app, and they replaced the part with a new watch face in a matter of a couple of days. I’m so happy with the quality and speed of the service and the watch face seems improved to the last one. Happy to still use my Fitbit!

## Frequently Bought Together

- Fitbit Charge 4 Black Advanced Fitness Tracker
- 4 Pack Stretchy Band Compatible with Fit bit Charge 4 Bands/ Charge 3 Band/ Charge 3SE Smart Watch Wristbands for Women Men, Breathable Adjustable Loop Nylon Replacement Straps Elastic Charge 3 Wristbands for Women Men
- AVOD Nylon Watch Bands Compatible with Fitbit Charge 4/Charge 3/SE, Soft Replacement Wristband Breathable Sport Strap with Band for Women Men

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-11*