
Philips Smart Sleep & Wake-up Light HF3650/01

Philips Smart Sleep & Wake-up Light HF3650/01
so the differences I found: This model here is the HF3650 - "Philips Wake up Light Relax Breath" item no. 6515584 is HF3651/01. The HF3651 is a little brighter (max lumen 315, compared to 310 for the HF3650) and has one more alarm tone. I didn't find any other differences in the brochure...
No; I am not aware of such a function.
According to the item description, the cheaper one has one more alarm tone. :)
Compared to the HF3651, the HF 3650 has only 7 instead of 8 alarm tones, and is minimally darker: 310 lux vs 315 lux. Both are dark at night.
Unfortunately, we can't answer this question for you, as we haven't been able to try this out in such a form. But I'll be happy to post it in the community, maybe a user can help you. :)