Philips SmartSleep HF3520 Wake-up Light Alarm Clock
- Colored sunrise and sunset simulation
- 5 natural wake-up sounds plus FM radio
- 20 brightness settings in reading lamp mode
- Tap snooze and automatic dimmable display
- Tabletop, corded electric, power cord included
- 1113 g, round white plastic
- 2 year warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A light-based alarm for people who wake groggy on dark mornings, with sunset dimming at night and a reading lamp mode. It runs on a cord, so it needs a bedside outlet, and app or smart home control is not listed.
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ASIN: B0093162RMModel: HF3520/60Category: Alarm Clocks
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Overview
Light sleepers and anyone who dreads waking in the dark get a bedside lamp that brightens gradually before the alarm, then adds sound. At night a simulated sunset dims down for winding down, and the lamp doubles as a reading light.
Waking to rising light instead of a sudden beep is the reason to buy, and Philips cites sleep research in the listing to support the idea. Placement depends on an outlet, and connected features such as an app are absent from the listing.
Who it's for
Dark mornings and early starts before dawn are where a gradual light alarm helps most. Travelers who need a compact clock, and sleepers who want app control, should look elsewhere.
Pros and cons
- Gradual colored sunrise before the alarm
- Sunset mode for winding down
- Choice of natural wake sounds
- FM radio built in
- Corded, needs a bedside outlet
- App or smart home control not listed
- Radio limited to FM
Performance notes
Wake quality depends on the light rising gradually in a dark room, so bright streetlight or early daylight weakens the effect. Sound joins the light at alarm time, and tap snooze is the interruption control described. The automatic dimmable display limits glare at night.
Specifications
| Brand | Philips |
|---|---|
| Model | HF3520/60 |
| Dimensions & fit | |
| Item weight | 2.45 pounds |
| Power & efficiency | |
| Power Source | Corded Electric |
| Construction & materials | |
| Material Type | Plastic |
| Color | White |
| Compatibility & installation | |
| Connectivity Technology | USB |
| Mounting Type | Tabletop |
| Warranty & support | |
| Manufacturer Warranty Description | 2 years |
| Other details | |
| Clock Form | Sunrise |
| Shape | Round |
| Brightness settings | 20 |
| Wake sounds | 5 natural sounds |
| SMART FEATURES | FM radio, tap snooze and automatic dimmable display |
Frequently asked questions
Where should the Philips HF3520/60 wake-up light go and how is it powered?
It is a tabletop unit that runs on corded electric power, and a power cord is included. Place it on a bedside table within reach of an outlet.
Is the Philips SmartSleep HF3520/60 an app-connected smart light?
No app or Wi-Fi feature is listed. Its smart features are FM radio, tap snooze and an automatic dimmable display.
Does the Philips HF3520/60 need batteries?
It runs on corded electric power. The listing also notes one lithium ion battery as required without explaining its role.
What is included with the Philips HF3520/60 wake-up light?
The wake-up light, a power cord, the DFU and a registration card.