Philips SmartSleep Sleep and Wake-Up Light (HF3650)

The HF3650 is the light-first pick. Philips rates it at 310 lux, the only published peak among the clocks on this page, which sits in the range of the 250 lux dawns used in most trials. Philips does not say at what distance it measured that figure, so keep the clock close to your pillow.

The default sunrise runs 30 minutes from a soft red through orange to bright yellow, and the quick start guide says you can change the length in the alarm menu. Sound starts once the light has filled the room: 7 wake sounds or FM radio, rising to your set volume over a few minutes. At night the sunset fades light and optional sound over a length you choose, and RelaxBreathe pulses the light at one of seven breathing rhythms for a wind-down you can follow with your eyes closed.

Everything is set on the device. The touch display adjusts its own brightness and can be switched off, which matters for a dark bedroom. There are 25 brightness steps, a tap-to-snooze top, an AUX input and a phone charging port. Philips’ comparison chart lists a power back-up alarm, which the cheaper HF3520 lacks.

The trade-offs are size and price. At 8.8 by 8.6 inches it is one of the bigger clocks here, and Tom’s Guide lists its high price and limited functions as the downsides. There is no app, so every change is made on the touch display. The sound library is small next to Hatch’s.

Tom’s Guide named it the best alarm for simulating sunrise in its 2026 roundup. If you want nearly the same light for about $70 less, the HF3520 is rated to 300 lux with a 20 to 40 minute sunrise. If you want dawns longer than an hour, the Lumie Bodyclock Shine 300 goes to 90 minutes.