Philips | Light Alarm Clock SmartSleep HF3531/01
Delivery to home In stock
in-store availability
Free delivery
Click & Collect
Cross-border delivery
Fast delivery
| Specifications |
|---|
Style Modern |
Wake up light |
Display type Digital |
Specifications
| General |
|---|
Style Modern |
Wake up light |
Display type Digital |
| Clock |
|---|
Snooze function |
Audible alarm |
Number of alarms 2 |
Sleep timer |
| Features and Connections |
|---|
FM Radio |
| Wake-up light |
|---|
Sunrise simulation |
Sunset simulation |
Light intensity 300 |
| Power supply |
|---|
Power source type Sector |
| Physical Characteristics |
|---|
Color White |
Dimensions (W x H x D) 19,9 x 19,2 x 14,6 |
Weight 730 |
| Product information |
|---|
HIFI code 21010363 |
Brand Philips |
Ean 8710103783367 |
Seller code EVEIL LUMIERE NATUREL HF3531 |
Description
Treat yourself to a truly natural wake-up with the Philips SmartSleep HF3531/01 wake-up light, designed to gently guide your body and mind out of sleep. At the heart of this model is a colored sunrise simulation: over 30 minutes, the light gradually evolves from a soft morning red to a warm orange, and finally to a bright yellow that fills the room. This gradual increase in brightness stimulates your body to wake up gently, without abrupt disruption.
The night light function offers a soft orange glow — just enough to guide you through the room without disturbing your sleep rhythm. Simply tap twice on the top of the device to turn it on or off.
To accompany your wake-up, you can choose from 7 natural sounds (e.g. “Forest Day / Birds in the Forest,” “Waves,” “Tibetan Bowl,” “Alpine Mornings”), or your favorite FM radio station. The sound volume gradually increases over the first ninety seconds, blending with the light for a smooth transition into the day.
The model offers 20 brightness levels (up to 300 lux) to suit your individual light sensitivity and wake-up rhythm. Additionally, the device automatically adjusts the display brightness based on ambient lighting: higher brightness when the room is lit, and lower brightness when it's dark to avoid disturbing your sleep.
The snooze mode is simple and intuitive: a light tap on the top of the device activates a pause, and after 9 minutes, the sound resumes. Lastly, the “Sunset / Sleep simulation” function helps prepare your body for sleep by gradually decreasing light and sound over a preset duration — a peaceful way to end the day.
Developed by Philips, with over 100 years of expertise in lighting, this wake-up light is clinically proven: independent studies show that 92% of users find it easier to get up in the morning with this device.
In summary, this wake-up light is ideal for those looking to improve the quality of their mornings, wake up in a more positive mood, and recreate a natural, biologically respectful environment in their bedroom.

