Philips’ Wake-Up lights are some of the most popular items we’ve ever posted, and a few of them are cheaper than ever, for one day only.

First up, the entry-level HF3500 is just $35 today, the best price we’ve ever seen by $5. At a very basic level, it’s an alarm clock with a sunrise-simulating light that slowly gets brighter for half an hour prior to you waking up. The idea here is that the light will ease you out of your REM cycles without fully waking you up. So when the alarm finally does beep, you’ll be refreshed and ready to get up, rather than jolted out of a deep slumber. I’ve owned this thing for years, and it really does work, at least for me.

The higher end HF3520 is also down to an all-time low $88 right now. The concept is the same, but you get added features like an FM radio, extra alarm sounds, adjustable sunrise duration, and multiple light colors. This is something you’ll use pretty much every day for years, so it might be worth the splurge.

As part of the same sale, you can also get Philips’ goLITE BLU Energy Light for an all-time low $87. This is a bright, sunlight-simulating lamp that you use during the day to combat seasonal affective disorder, or just to energize yourself. We’re getting to the point in the year where the sun has already set by the time you leave work, so this can help fill the void in your brain that craves sunlight.