Philips SmartSleep Wake-up Light HF3520 review

The HF3520 is the wake-up light Philips calls its best seller, and it covers the basics of a light-first wake-up at $124.99. Before your alarm time the light builds over 30 minutes, starting as soft red, moving through orange and ending as bright yellow light that fills the room. Once the sunrise finishes, one of five natural sounds plays, rising to your set volume within one and a half minutes, or you can wake to FM radio instead. A sunset simulation dims the light at bedtime for winding down. Philips says the light draws on its Sleep and Respironics healthcare knowledge and its lighting history, claims its wake-up lights are clinically proven, and offers a 90 day money back guarantee. Compared with the Lumie Shine 300, it costs less and adds color to the sunrise, but the page describes a fixed 30 minute sunrise and fewer sounds, and there is no breathing guide like the one on the pricier HF3650.

Who it is for

People who want a well-known sunrise alarm at a lower price and do not need an app.

Price

$124.99 at the Philips US store when checked.

SmartSleep HF3520/60 $ 124.99
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Colored sunrise that brightens over 30 minutes from soft red through orange to bright yellow
• Sunset simulation for winding down at bedtime
• Five natural wake-up sounds: Forest Birds, Buddha, Yoga, Ocean Waves and Nepal Bowls
• Wake sound rises to your chosen volume within one and a half minutes
• FM radio as an alternative wake-up sound

Strengths and weaknesses

• Strength: Lowest-priced Philips wake-up light in the US store when checked
• Strength: Colored sunrise rather than a plain dimmer
• Strength: Philips lists a 90 day money back guarantee
• Weakness: Sunrise length is described as 30 minutes on the product page
• Weakness: Only five built-in sounds
• Weakness: No guided breathing, unlike the HF3650

Key facts

• Sunrise: 30 minutes, red to orange to yellow
• Sounds: 5 natural sounds plus FM radio
• Sunset mode: Yes
• Guarantee: 90 day money back
• Model: HF3520/60

Where it ranks

Philips SmartSleep Wake-up Light HF3520 is No. 2 in our Best Sunrise Alarm Clocks verdict.