---
product_id: 50773435
title: "Philips SmartSleep Wake-up Light HF3531/01"
brand: "philips"
price: "₨130116"
currency: LKR
in_stock: null
reviews_count: 2
url: https://www.desertcart.lk/products/50773435-philips-smartsleep-wake-up-light-hf3531-01
store_origin: LK
region: Sri Lanka
---

# Natural sunrise simulation 7 soothing natural sounds Built-in USB charging port Philips SmartSleep Wake-up Light HF3531/01

**Brand:** philips
**Price:** ₨130116
**Availability:** ❌ Out of Stock

## Summary

> 🌞 Rise and shine with science-backed serenity!

## Quick Answers

- **What is this?** Philips SmartSleep Wake-up Light HF3531/01 by philips
- **How much does it cost?** ₨130116 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/50773435-philips-smartsleep-wake-up-light-hf3531-01)

## Best For

- philips enthusiasts

## Why This Product

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

## Key Features

- • **Fall Asleep with Ease:** Dimming light and calming sounds create the perfect bedtime ritual to unwind.
- • **Stay Connected Overnight:** Integrated USB port lets you charge your phone while you sleep—no more bedside clutter.
- • **Multi-Functional Soundscape:** Choose from 7 natural sounds or FM radio to personalize your wake-up and wind-down experience.
- • **Wake Up Refreshed, Every Day:** Clinically proven to help 92% of users rise easier with gentle light and sound.
- • **Sunrise Simulation for Natural Energy:** Experience a gradual colored sunrise that syncs your body clock for a stress-free morning.

## Overview

The Philips SmartSleep Wake-up Light HF3531/01 uses clinically proven colored sunrise simulation and 7 natural sounds to help 92% of users wake up more easily. It features a dimming light and sound system to gently lull you to sleep, plus an FM radio and a USB port for convenient phone charging—making it the ultimate sleep and wake companion for busy professionals.

## Description

Philips SmartSleep Wake-up Light, Coloured Sunrise and Sunset Simulation, 7 Natural Sounds, FM Radio & Reading Lamp, Tap Snooze (Model HF3531/01)

## Features

- Clinically proven to work with radio function and 7 natural sounds
- 92% of users find it easier to get up in the morning
- The Wake-up Light eases you into the day by re-creating a natural sunrise
- Dimming light and sound gently send you off to sleep
- USB port for mobile phone charging

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Name | HF3531/01 WAKE UP LIGHT FANCY BOX |
| Volume | 1 Litres |
| Units | 1000.0 millilitre |
| Country of origin | China |
| Brand | Philips |
| Country of origin | China |

## Product Details

- **Finish type:** Painted
- **Base material:** Plastic
- **Product dimensions:** 5.7D x 7.8W x 7.6H centimetres
- **Item weight:** 730 Grams
- **Lamp type:** Reading lamp

## Images

![Philips SmartSleep Wake-up Light HF3531/01 - Image 1](https://m.media-amazon.com/images/I/71LwrjKXTJL.jpg)

## Questions & Answers

**Q: With the hf3531 model, the supplied usb port is- it able to support music play back? or is it just for charging. thank you**
A: Hi there, good question. That USB-port indeed is for charging only. Hope this answers your question! Kind regards, Remco

**Q: Does the alarm stay set for the following day after you've stopped it in the morning, and if so, what do you press to make this happen?**
A: The alarm always stays set. You can choose which days of the week you want to set it for. Like a mobile phone ⏰ 👍

**Q: Just received this. Is it normal for the light to reach the full preset intensity within 1-2 minutes after the alarm starts?**
A: Yes. The light starts to come on 25 mins before the alarm goes off. It starts with a deep dark red and very gradually gets lighter over the 25 mins

**Q: Does the time stay illuminated all night?**
A: No, it does not. I can confirm that you can set the illumination setting to "0", which will turn off the display whenever you are not touching the device.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant product!
*by C***1 on 12 March 2023*

I used to wake up abruptly every morning to the shrill alarm from my mobile phone, every alarm on there was loud and abrupt and this has been the case with other mobile phones too. I was looking at alarm clocks generally and then started reading reviews about wake up light alarms and how they actually prepare your body to wake up naturally through gradual low level light that simulates a sunrise. I was reading good reviews about these products and as someone who has blackout curtains I thought this could be something that would work for me.I found this particular alarm as it kept coming up in other peoples reviews. Although a bit pricey it’s not as pricey as some and you get some extra features with this too including FM radio which works well, a midnight light so you can tap it a couple of times if you need to get up in the night and you get a subtle light to help you see where you’re going instead of a bright dazzling one. You also get the choice of 7 natural sounds to add to your alarm which play at the point the alarm reaches its maximum brightness and then you can choose to tap and snooze the alarm and the sound switches off leaving the light on and then replays after 9 minutes. Some people may think 9 minutes is too long, you can’t change this either, but if you are someone who likes to snooze then just factor that in to the time you select when you actually set your alarm. You can have 2 alarms so maybe one for weekdays and one for weekends, or if you’re like me then during the week I need to be up at different times on particular days so it’s handy to have 2 alarms.I had read that some people had found this alarm difficult to set up, however once I’d got the hang of it it was fairly simple and the instructions are clear. There is also a test feature so once you have set it up you can test it to see how bright the alarm will be at full light and how loud the sound will be and then adjust as you need. Personally I set mine up at night so that in a dark room I could see how bright the alarm would get and also set the display light so it wasn’t too bright overnight, the display dims when it’s dark and brightens when it’s light. If you don’t like any light whatsoever you can turn the display off altogether and then just tap the alarm to see the time etc. You can even set a sunset duration so it will act as a lamp while you read etc and gradually dim over the duration you set and then turn off, this is a really nice way to prepare to sleep too and if you want you can add relaxing sounds to that or the radio but you don’t have to.Most importantly morning wake ups are now so much nicer! I don’t feel like I’m being dragged from sleep, my mood is nice and calm and I’m ready for the day. Love this alarm and will never go back to my shrill mobile phone. Would definitely recommend.

### ⭐⭐⭐⭐⭐ Waking up HAPPY!!
*by N***E on 4 January 2024*

The media could not be loaded. As someone who has struggled with the impact of reduced sunlight in the autumn and winter months, leading to what many refer to as winter-onset Seasonal Affective Disorder (SAD), I was on the lookout for a solution that could make my mornings brighter, both literally and figuratively. The decreased levels of sunlight during these seasons can disrupt the body’s internal clock and even affect mood due to changes in serotonin levels. This is where the Sunrise Alarm Clock has been a game-changer for me.This alarm clock is not just a device; it’s an experience. It gently starts a sunrise simulation 30 minutes before the alarm time, filling my room with a gradually brightening light that mimics the natural dawn. This feature alone has remarkably attuned my body’s internal clock to the rising sun, providing a more natural wake-up process.The most delightful aspect, however, is waking up to the sounds of nature. Instead of the jarring noise of a traditional alarm, I’m greeted each morning with the soothing chirps of birds. It’s a serene way to wake up, often so effective that I find myself waking up just before the alarm sound, in a much more peaceful state than I ever did with my old, annoying phone alarm.The realism of the sunrise simulation is astounding. It’s hard to believe how it replicates the actual sunrise so closely, casting a warm glow that gradually intensifies, making my room come alive with the new day’s promise. It’s a gentle nudge, rather than a harsh jolt, to start my day.Beyond its functional benefits, this alarm clock has had a profound impact on my mood and overall well-being. The gradual awakening aligns with my body’s rhythm, helping to combat feelings of depression that can be exacerbated by the lack of sunlight in the colder months. It’s a subtle yet powerful tool in maintaining a healthy balance in my serotonin levels.In conclusion, I couldn’t be happier with this Sunrise Alarm Clock. It has transformed my mornings from groggy and dull to peaceful and energized. For anyone who struggles with waking up, especially during the darker months, I cannot recommend this product enough. It’s not just an alarm clock; it’s a wellness tool that has significantly improved my quality of life. I would absolutely buy it again, and I encourage anyone seeking a more natural and serene way to start their day to do the same.

## Frequently Bought Together

- Philips SmartSleep Wake-up Light, Coloured Sunrise and Sunset Simulation, 7 Natural Sounds, FM Radio & Reading Lamp, Tap Snooze (Model HF3531/01)
- Lumie Vitamin L, Slim Light Box for Effective SAD Light Therapy, White
- Beurer TL30UK SAD Lamp | Helps combat seasonal affective disorder | Daylight therapy lamp with 10,000 lux | Adjustable stand and travel bag | UV-free LED light therapy | Medical device

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-01-23*