Philips SmartSleep Sleep and Wake-Up Light HF3650 review

The HF3650, which Philips notes was formerly known as Somneo, keeps the colored 30 minute sunrise of the cheaper HF3520 and adds more help at bedtime. The morning light starts soft red, turns orange and ends in bright yellow, and natural sounds or FM radio finish the wake-up. In the evening, a sunset simulation lowers light and optional sound over a duration you choose. The extra is RelaxBreathe: a light-guided wind-down where you follow one of seven rhythms of light intensity or sound with your breathing, eyes closed. Philips says 92% of users found it easier to get out of bed, a figure from its own users rather than an independent study. At $199.99 it costs $75 more than the HF3520, so the value score is lower. Buy it for the breathing guide and the extra light and sound options, not for a longer sunrise.

Who it is for

People who struggle to switch off at night as much as they struggle to get up.

Price

$199.99 at the Philips US store when checked.

SmartSleep HF3650/60 $ 199.99
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Sunrise that builds over 30 minutes from soft red to orange to bright yellow
• Sunset simulation with light and optional sound over your set duration
• RelaxBreathe light-guided breathing with seven rhythms
• Natural sounds or FM radio to finish the wake-up
• Multiple light and sound options

Strengths and weaknesses

• Strength: Only light on this list with a guided breathing mode
• Strength: Philips says 92% of users found it easier to get out of bed
• Strength: Sunset length is set by the user
• Weakness: $75 more than the HF3520
• Weakness: Sunrise described as 30 minutes on the product page
• Weakness: Philips cites its own user figure rather than independent data

Key facts

• Sunrise: 30 minutes, red to orange to yellow
• Wind-down: RelaxBreathe, seven rhythms
• Wake sounds: Natural sounds or FM radio
• Former name: Somneo
• Model: HF3650/60

Where it ranks

Philips SmartSleep Sleep and Wake-Up Light HF3650 is No. 4 in our Best Sunrise Alarm Clocks verdict.