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Philips Somneo (HF3671) (Wake-up light)
Sunrise simulator that uses light to wake the user and assists with falling asleep using a gradual sunset effect.
- What it is
- Sunrise simulator that uses light to wake the user and assists with falling asleep using a gradual sunset effect.
- Best for
- Sunrise and sunset simulation · Guided breathing relaxation · Environmental room tracking
- Platforms
- Standalone device
Strengths
- Wakes with light using sunrise simulation
- Sunset and guided breathing for falling asleep
Weak points
- High list price (often subject to promotions)
- Limited software updates
What is Philips Somneo (HF3671) (Wake-up light)?
The Philips Somneo (HF3671) is a sunrise and sunset simulator clock designed to assist with sleep cycles. It uses variable light intensity to simulate a sunrise and sunset, aiming to assist with falling asleep and waking up. The device includes guided light relaxation features and environmental sensors to measure room conditions such as temperature, humidity, noise, and light. It functions as a standalone device with a touch-sensitive interface.
At a glance
- Type
- Sunrise alarm
- Platforms
- Standalone device
- Subscription required
- No
- Free trial
- No
- French
- Yes
- Availability
- France, Belgium, Netherlands, United Kingdom
- Uses AI
- No
- Evidence level
- Partial clinical validation
This information is indicative and may change: only the publisher's own website is authoritative.
Who uses Philips Somneo (HF3671) (Wake-up light)?
Home users
Individuals seeking to establish a consistent bedtime and wake-up routine using light signals.
Key features
Light simulation
Gradual increase or decrease in light intensity with hues ranging from red to orange and yellow.
RelaxBreathe
Light-guided breathing function to assist during the transition to sleep.
AmbiTrack sensors
Measurement of room parameters including temperature, humidity, noise, and ambient light.
Touch interface
Touch screen for adjusting settings, wake-up sounds, and light intensity.
Pricing
Product availability varies by retailer. Official US pricing is US$199.99 and Canadian pricing is CA$249.99.
Pricing recorded on November 1, 2026. Excluding taxes and shipping. Prices change: the amount that applies is the one shown by the publisher's own checkout.
Philips Somneo (HF365x/HF367x series)
Variable
Standalone device; some models include environmental sensors (AmbiTrack) and app connectivity.
- Sunrise/sunset simulation
- Natural sounds
- FM radio
- Environmental sensors (depending on model)
- SleepMapper connectivity (depending on model)
The HF3671 model is the connected version that includes environmental sensors. It is recommended to verify stock availability at retailers, as prices vary based on current promotions.
Use cases
Falling asleep assistance
Using the sunset program and guided breathing.
Outcome: Support for sleep onset through gradual reduction of light.
Gradual wake-up
Programming a sunrise simulation over a set duration.
Outcome: Gradual wake-up via increasing light intensity.
How it works in practice
Setting the alarm
- 1Set the wake-up time on the touch screen
- 2Choose the maximum light intensity
- 3Select a wake-up sound or music
- 4Activate the sunrise simulation
Using relaxation
- 1Activate the RelaxBreathe function
- 2Follow the light rhythm for breathing
- 3Allow the light to gradually decrease
In your daily routine
Standalone device
Functions without major external software dependencies for its primary features.
Connectivity
Includes a USB port for charging mobile devices.
Known limits
No radio
The HF3671 model does not have a built-in radio tuner.
No projection
The device does not project the time onto the ceiling.
Consider something else if
- Alarm clocks with built-in FM radio
- Alarm clocks with time projection
How to use it
Installation
Place the device on a nightstand near an electrical outlet.
Setup
Use the touch interface to adjust brightness preferences and sounds.
Frequently asked questions
Does the Philips Somneo have a radio?+
No, the HF3671 model does not have a radio tuner.
Does the device project the time?+
No, it does not have a function to project the time onto the ceiling.
Can I charge a phone with it?+
Yes, the device is equipped with a USB port for charging mobile devices.
How does the relaxation feature work?+
The RelaxBreathe function uses a guided light pattern to pace the user's breathing.
What data do the sensors measure?+
The sensors measure the temperature, humidity, noise, and light in the room.
Sources
Evidence level shown: Partial clinical validation
Meta-analyses on light therapy show a modest effect on certain sleep problems; sunrise simulation is minimally researched and no studies have been conducted on this specific model.
No published source specific to this product has been identified so far.
Background on the approach
General references on the category or technology: they do not cover this specific product.
These references cover the approach or technology, not an evaluation of the product by us. None of these links is an affiliate link. Read our method.
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