---
product_id: 17896486
title: "FaceLake ® FL400 Pulse Oximeter Fingertip with Carrying Case, Batteries, Lanyard, and Warranty (Blue)"
brand: "facelake"
price: "₨14142"
currency: LKR
in_stock: true
reviews_count: 12
category: "Face Lake"
url: https://www.desertcart.lk/products/17896486-facelake-fl400-pulse-oximeter-fingertip-with-carrying-case-batteries-lanyard
store_origin: LK
region: Sri Lanka
---

# Portable with carrying case Batteries included 24-sec rapid reading FaceLake ® FL400 Pulse Oximeter Fingertip with Carrying Case, Batteries, Lanyard, and Warranty (Blue)

**Brand:** facelake
**Price:** ₨14142
**Availability:** ✅ In Stock

## Summary

> 💙 Stay sharp, breathe easy, and never miss a beat with FaceLake FL400.

## Quick Answers

- **What is this?** FaceLake ® FL400 Pulse Oximeter Fingertip with Carrying Case, Batteries, Lanyard, and Warranty (Blue) by facelake
- **How much does it cost?** ₨14142 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/17896486-facelake-fl400-pulse-oximeter-fingertip-with-carrying-case-batteries-lanyard)

## Best For

- facelake enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Stylish:** Lightweight 3.2 oz design in vibrant blue fits perfectly in your bag or pocket—health meets style.
- • **Ready Out of the Box:** Includes batteries, lanyard, and a sleek carrying case for on-the-go monitoring anytime, anywhere.
- • **Peace of Mind Warranty:** Backed by a warranty to keep you covered, because your health deserves no compromises.
- • **Instant Health Insights:** Get accurate blood oxygen & pulse readings in just 24 seconds—stay ahead of your wellness.
- • **Precision You Can Trust:** Advanced sensor technology delivers consistent, reliable results trusted by health pros and enthusiasts alike.

## Overview

The FaceLake FL400 Pulse Oximeter offers fast, precise blood oxygen and pulse rate readings in just 24 seconds. Designed for portability, it comes complete with batteries, a carrying case, and lanyard, making it ideal for health-conscious professionals on the move. Its advanced sensor technology ensures reliable accuracy, while the compact, stylish blue design fits seamlessly into your daily routine. Supported by a warranty, the FL400 is a trusted companion for proactive wellness monitoring.

## Description

Buy FaceLake ® FL400 Pulse Oximeter Fingertip with Carrying Case, Batteries, Lanyard, and Warranty (Blue): Pulse Oximeters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Haven’t had an inaccurate reading - Great price good quality very effective very accurate true to color and size clear screen great on batteries bought an extra one for my car
Review: It works - and could be a lifesaver - I bought this pulse-oximeter after seeing articles about how some victims of COVID-19 can present with significantly diminished oxygen saturation of the blood while still feeling relatively OK, which is an effect that seems to be peculiar to COVID-19. The suggestion was that it might be preferable to begin to treat virus-positive people when their oxygen saturation dips below 90%, rather than wait until it crashes vastly lower, which apparently frequently happens, and which at that point is a crisis situation that may be difficult to reverse. Should the worst happen, and I become infected and began to experience symptoms at home, this device will provide useful data to share by email with my PCP as he considers what to recommend. The device worked right out of the box. The only negative I have to report is that the cover seemed scuffed and scratched (see first photo) as though this was not a brand new item. However, it turns out that the marks are on a removable film, and once that was taken off, the device seemed pristine. It is kind of annoying that the film, and the need to remove it, doesn't seem to be anywhere in the product materials. I installed the batteries according to the standard "+/-" labeling. I pushed the "on" button and the lights went on. I put my index finger into the device, waited a few seconds for it to calibrate, and bang - there was my pulse (65) and my oxygen saturation (97), just like that. Over the following several days, I've checked several times a day, and my pulse is ranging from the mid sixties to the mid eighties, which is pretty consistent with the values measured when I go to the doctor. My oxygen saturation levels range from 94 to 99%. Technically I did not feel I could give a rating for "accuracy" for this product, since I don't have an independent way of checking its values, but obviously I am getting readings consistent with a healthy person, so it seems reasonably accurate. Some reviewers have raised the issue that, when the hand and fingers are extended in the standard manner for taking a pulse-oximeter reading, the values are presented in such a way as to be upside down to the person being tested (see middle photo, hand with outstretched fingers). And, in fact, some competing devices do seem to have the ability to "flip" the values for easier reading. However, I didn't really have a great deal of difficulty in flipping the values in my head. In addition, I discovered that my wrist is flexible enough that I can turn my hand and bend my index finger and read the values "right side up" (see third photo). While one might be concerned that this maneuver might constrict blood vessels and compromise the reading, I found that the reading was exactly the same either way, as shown, and was stable if I kept my hand in this position. So I really don't see that this orientation issue should be a big factor in deciding whether to buy this item. In spite of slight misgivings about the "upside-down" issue and some reports of the device not working on arrival, I took a chance on this particular manufacturer because there were many reviews, stretching back to pre-COVID days, and that made me comfortable. The company seems to be implying, without saying it directly, that at least some reports of the device not working might be ascribed to improper insertion of the batteries. In addition, as described above, I don't see the "upside down" orientation of the data to be a significant issue. I'm glad I took a chance. The device worked immediately, and it has continued to work over the last week.

## Features

- FL400 Pulse Oximeter Fingertip with Carrying Case
- Color: Blue
- The FL400 registers a constant reading in several seconds (24sec. for the most accuracy) and is able to provide quick information regarding your blood oxygen levels.
- The FL400 new and updated technology allows reading to be quick precise.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0117V8Q2O |
| Batteries | 2 AAA batteries required. (included) |
| Best Sellers Rank | #129,305 in Health & Household ( See Top 100 in Health & Household ) #117 in Athletic & Aviation Pulse Oximeters |
| Date First Available | July 8, 2015 |
| Item Weight | 3.2 ounces |
| Item model number | FL400B |
| Package Dimensions | 4.3 x 2.8 x 1.7 inches |

## Product Details

- **Brand:** FaceLake
- **Color:** Blue
- **Measuring Range:** 70-100%
- **Model Name:** FL400
- **Number of Batteries:** 2 AAA batteries required. (included)

## Images

![FaceLake ® FL400 Pulse Oximeter Fingertip with Carrying Case, Batteries, Lanyard, and Warranty (Blue) - Image 1](https://m.media-amazon.com/images/I/714x+dL9mXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Haven’t had an inaccurate reading
*by P***Z on November 21, 2025*

Great price good quality very effective very accurate true to color and size clear screen great on batteries bought an extra one for my car

### ⭐⭐⭐⭐⭐ It works - and could be a lifesaver
*by P***N on May 9, 2020*

I bought this pulse-oximeter after seeing articles about how some victims of COVID-19 can present with significantly diminished oxygen saturation of the blood while still feeling relatively OK, which is an effect that seems to be peculiar to COVID-19. The suggestion was that it might be preferable to begin to treat virus-positive people when their oxygen saturation dips below 90%, rather than wait until it crashes vastly lower, which apparently frequently happens, and which at that point is a crisis situation that may be difficult to reverse. Should the worst happen, and I become infected and began to experience symptoms at home, this device will provide useful data to share by email with my PCP as he considers what to recommend. The device worked right out of the box. The only negative I have to report is that the cover seemed scuffed and scratched (see first photo) as though this was not a brand new item. However, it turns out that the marks are on a removable film, and once that was taken off, the device seemed pristine. It is kind of annoying that the film, and the need to remove it, doesn't seem to be anywhere in the product materials. I installed the batteries according to the standard "+/-" labeling. I pushed the "on" button and the lights went on. I put my index finger into the device, waited a few seconds for it to calibrate, and bang - there was my pulse (65) and my oxygen saturation (97), just like that. Over the following several days, I've checked several times a day, and my pulse is ranging from the mid sixties to the mid eighties, which is pretty consistent with the values measured when I go to the doctor. My oxygen saturation levels range from 94 to 99%. Technically I did not feel I could give a rating for "accuracy" for this product, since I don't have an independent way of checking its values, but obviously I am getting readings consistent with a healthy person, so it seems reasonably accurate. Some reviewers have raised the issue that, when the hand and fingers are extended in the standard manner for taking a pulse-oximeter reading, the values are presented in such a way as to be upside down to the person being tested (see middle photo, hand with outstretched fingers). And, in fact, some competing devices do seem to have the ability to "flip" the values for easier reading. However, I didn't really have a great deal of difficulty in flipping the values in my head. In addition, I discovered that my wrist is flexible enough that I can turn my hand and bend my index finger and read the values "right side up" (see third photo). While one might be concerned that this maneuver might constrict blood vessels and compromise the reading, I found that the reading was exactly the same either way, as shown, and was stable if I kept my hand in this position. So I really don't see that this orientation issue should be a big factor in deciding whether to buy this item. In spite of slight misgivings about the "upside-down" issue and some reports of the device not working on arrival, I took a chance on this particular manufacturer because there were many reviews, stretching back to pre-COVID days, and that made me comfortable. The company seems to be implying, without saying it directly, that at least some reports of the device not working might be ascribed to improper insertion of the batteries. In addition, as described above, I don't see the "upside down" orientation of the data to be a significant issue. I'm glad I took a chance. The device worked immediately, and it has continued to work over the last week.

### ⭐⭐⭐⭐⭐ Easy to use and read. Perfect for COVID times
*by E***E on January 19, 2021*

So I bought this for my peace of mind given the ongoing COVID-19 pandemic in the U.S. I just tried out the oximeter on both my husband and myself and felt the product was easy to use and very easy to read. Some reviewers say that the oximeter is hard to read when their fingers are turned out and away from them...and honestly folks, I really had to laugh at those reviews. Your inability to make it easier for yourself shouldn’t be a reason to dock stars off a product. Pro-tip: Just clip the oximeter to your index finger as though you’re checking out your nails with a semi-closed fist and then you can read it easily! In any case, the clip was padded and didn’t hurt either of us. In terms of accuracy, I can only so far attest that the heart rate on the pulse oximeter came out exactly the same as the heart rate shown on my Apple Watch. Both the oximeter and Apple Watch fluctuated within milliseconds of each other, so it made me feel better that the accuracy rate is correct for at least the heart rate. I don’t have anything else to measure the accuracy of the Sp02 level but both my husband and I measured at least 95% and neither of us have COVID so it seems accurate enough for a home device! Lastly: reading through other reviews...folks...yes there is a film on the device. Yes you probably want to take it off. No, it’s not necessary for the product humans to note that there’s a film on the device just like it likely wasn’t necessary for your TV or phone makers to tell you there’s a thin film to take off before use. Also, the device comes with two batteries. Check out the + and - before you insert the batteries. The springs are on the same side, and if you’re not paying attention to the + and - as inscribed on the oximeter, I suspect you’ll also probably say the device is broken or faulty.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-25*