'/%3e%3cpath%20d='M31%2038c0-8%206-14%2014-14h38c8%200%2014%206%2014%2014v52c0%208-6%2014-14%2014H45c-8%200-14-6-14-14V38z'%20fill='url(%23tmPanel)'%20filter='url(%23tmShadow)'/%3e%3cpath%20d='M44%2044h40'%20fill='none'%20stroke='%23f97316'%20stroke-width='8'%20stroke-linecap='round'/%3e%3cpath%20d='M44%2061h24'%20fill='none'%20stroke='%23fdba74'%20stroke-width='8'%20stroke-linecap='round'/%3e%3cpath%20d='M43%2087l13-14%2011%2010%2017-21%202%2025H43z'%20fill='%23fb923c'/%3e%3ccircle%20cx='84'%20cy='58'%20r='6'%20fill='%23f97316'/%3e%3cpath%20d='M77%2091l16-18%2014%2014'%20fill='none'%20stroke='%2316a34a'%20stroke-width='7'%20stroke-linecap='round'%20stroke-linejoin='round'/%3e%3cpath%20d='M99%2074h-6v-6'%20fill='none'%20stroke='%2316a34a'%20stroke-width='7'%20stroke-linecap='round'%20stroke-linejoin='round'/%3e%3cpath%20d='M30%2034c8-10%2020-15%2034-15s26%205%2034%2015'%20fill='none'%20stroke='%23fff7ed'%20stroke-width='5'%20stroke-linecap='round'%20opacity='.92'/%3e%3cpath%20d='M27%2096c9%208%2021%2012%2037%2012s28-4%2037-12'%20fill='none'%20stroke='%23fff7ed'%20stroke-width='5'%20stroke-linecap='round'%20opacity='.72'/%3e%3c/svg%3e){kind=small}
Philips
Philips SmartSleep Wake-up Light, Coloured Sunrise and Sunset Simulation, 7 Natural Sounds, FM Radio & Reading Lamp, Tap Snooze (HF3531/01)
A bedside wake-up light with a coloured sunrise of 20 to 40 minutes, a dusk fade with sounds, 20 brightness settings, 7 natural sounds, FM radio, two alarms, tap snooze, a reading lamp, a midnight light and a USB port for phone charging. Philips UK lists its light intensity as 300 lux.
Updated October 10, 2026
- Coloured sunrise simulation, red to orange to yellow, adjustable from 20 to 40 minutes (Philips UK spec).
- Dusk simulation with nature sounds for bedtime.
- 20 brightness settings; light intensity listed as 300 lux.
- 7 natural wake-up sounds plus FM radio; two alarm times; tap snooze of 9 minutes.
- Reading lamp and a soft midnight light; USB port for mobile phone charging (listing).
- Philips lists a 4 to 8-hour time back-up, a 16.5 W rating and a 150 cm cord.
Good for
People who want a coloured sunrise plus extras: reading lamp, two alarms, tap snooze and phone charging.
Skip it if
Anyone who wants a sunrise longer than 40 minutes or app control.
Our take
On this page
Our verdict
The HF3531/01 is the all-rounder: a coloured sunrise that Philips describes as moving from red through orange to yellow, set from 20 to 40 minutes, 20 brightness settings and a light intensity Philips lists as 300 lux. It has two alarm times, 7 natural sounds, FM radio and tap snooze (9 minutes), plus a reading lamp, a soft midnight light and a USB port to charge a phone. Skip it if you want a sunrise longer than 40 minutes; that is where the Lumie Shine 300 goes further. The variant trap: Philips sells several wake-up lights with similar names, including the cheaper HF3519, the older HF3520 and app-connected models, so check that the listing shows HF3531/01. The listing repeats Philips' "clinically proven" and survey claims; we do not.
Placement and power
Philips lists a 16.5 W rating and a 150 cm cord, and a time back-up of 4 to 8 hours if the power goes off. It needs a socket within reach of the bedside table and should face your pillow. Philips describes it as UV-free and not intended as general room lighting, although the separate reading-lamp mode is meant for reading in bed.
FAQ
Can I charge my phone from it?
The Amazon listing and Philips' specification both say it can charge a mobile phone from its USB port. Use your phone's own cable.
Can two people use different alarm times?
Yes. Philips lists two alarm times.
How we researched this
We read Philips UK's product page and published specification for HF3531/01 and the Amazon.co.uk listing on 2026-10-10. We did not test the lamp or measure its output.
