Philips SmartSleep HF3500/60 Wake-Up Light Therapy Alarm Clock with Sunrise Simulation, White

4.3 out of 5 stars 4,398 ratings

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  • Clinically proven light therapy lamp and alarm clock for improving your sleep, energy, and well being
  • Only Philips wake up light alarm clocks are clinically proven to help you wake up feeling more refreshed; Light intensity 200 lux CAUTION: clock display cannot be dimmed completely
  • Note: Product uses AC power adapter (included)
  • Tap to snooze alarm clock with speaker and beep function ensure you wake up on time; Use the light therapy lamp as a bedside reading lamp with 10 brightness settings
  • Natural light alarm clock comes with 90 day no hassle money back guarantee from Philips
  • Natural light alarm clock for a more natural wake up; Lamp with natural light sunrise alarm improves your ability to function in the morning

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One Philips Wake- Up Light with Sunrise Simulation

Product description

Sunrise simulation wakes you gradually Bedside light with 10 light settings Color flow of sunrise: bright yellow Gentle beep ensures you get up on time Snooze function. Frequency: 50/60 Hz.

Philips Somneo Connected HF3670 Philips Somneo HF3650 Philips Wake-Up Light HF3520 Philips Wake-Up Light HF3500
Ambitrack Bedroom Environment Monitoring Yes No No No
Sun/Light Themes 4 1 1 1
RelaxBreathe Wind-Down function Yes Yes No No
Midnight light function Yes Yes No No
Colored Sunrise/ Sunset simulation Yes Yes Yes No
Natural wake up sounds 8 8 5 Brightness Settings
PowerBack up Yes Yes Yes No
USB Charging and AUX deck Yes Yes No No
FM Radio Yes Yes Yes No
Brightness Settings 25 (300 Lux) 20 (300 Lux) 20 (300 Lux) 10 (200 Lux)

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Most helpful customer reviews on 3.6 out of 5 stars 2,083 reviews
3.0 out of 5 stars Suggestion for fixing the volume/sound/beeping problem
2 November 2017 - Published on
Verified Purchase
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3.0 out of 5 stars Suggestion for fixing the volume/sound/beeping problem
Reviewed in the United States on 2 November 2017
The clock has two main cons (I also tried other clocks on the market in the same range and, unfortunately, I had to come back to this one because of the positive features - ease of use, quality of light, screen dimming and light dimming options etc.):

So, the main cons:

1. It has no backup battery and if the power flickers for a half a second your settings are gone. You can easily miss work. I'm still thinking about a solution to create my own power backup.

2. The main problem that other customers seem to have, just like me, is that there is no adjustment for the piercing beeping volume. That is horror. Like everyone else, I tried muffling it with cloth, tape etc. but that didn't really work and I found a better solution (there is another customer who completely removed the speaker but I need it, just in low volume):

- this clock has a simple piezo speaker (see video and pics), which means that the sound is coming out of a very small hole.
- Instead of covering the whole clock with a scarf of pads or whatever I and other people used, I decided to "kill the sound" as it exits the speaker, at the source.
- Thus, I used a dremel (anything else can be used - a hot knife etc - be creative!) and cut a round hole around the speaker. The risk of touching other electronics is very small, as there is a good gap between the cover that you are cutting and the electronic board. Be careful, though.
- As you can hear in the video, by covering the speaker with your finger the sound decreases by 60-70%.
- I covered the speaker with a small but thick piece of rubber (you need mass to block sound, anything thick and dense will work, not cloth or cotton or fluffy stuff) and you can easily apply a sticker to cover the hole you just made.

There's also someone on Youtube who took the whole thing apart if you're interested -

If I find a cheap easy solution for the backup battery I'll make sure to post it here.
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398 people found this helpful
2.0 out of 5 stars BEEEP BEEEP BEEEP
21 April 2017 - Published on
Verified Purchase
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2.0 out of 5 stars BEEEP BEEEP BEEEP
Reviewed in the United States on 21 April 2017
The soft light that slowly brightens the room to help wake you up so peacefully is overthrown with a giant BEEEP BEEEP BEEEP.

The numbers on the display are a bright red, even at the lowest setting, which is a nice throwback to the 80s.

The 4 buttons allow you to adjust the time via unplugging the clock. Setting the alarm is easy though.

For the price, this thing should have some basic scheduling, and not have the functionality of a $5 hotel alarm clock.
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255 people found this helpful
Amy L
2.0 out of 5 stars Disappointed
20 July 2017 - Published on
Verified Purchase
157 people found this helpful
1.0 out of 5 stars I should have read the reviews
6 January 2017 - Published on
Verified Purchase
136 people found this helpful
5.0 out of 5 stars So much easier to get out of bed!
25 September 2016 - Published on
Verified Purchase
88 people found this helpful