Review on ⏰ Black Marathon Digital Atomic Alarm Clock with Heat and Comfort Index Features - Push-Button Backlight, Indoor Temperature, Calendar/Ideal for Bedside, Desk, Hotel Use - Batteries Included by Beth Brooks

I like the size and brightness of the display. I can easily read the display at night without fiddling around with reading glasses. The clock is relatively easy to set and the battery life seems very good - I'm still using the batteries that came with the device (4 months). My only complaint is that this particular clock is unable to receive a time signal to sync unless I put it on my windowsill for the night. Other watches I have can sync no matter where I put them. However, without a time signal, it's accurate enough that I have to put it on my windowsill about once a month. Good product. Revision: The clock is still working after 8 months with the original batteries that came with it, but the auto-sync function has been completely discontinued. I've tried new alkaline batteries but they still won't sync no matter where I put them in the house. Revision: One year and one month from original purchase. For the last 4 months or so the clock resets to 12pm in the middle of the night so I wake up at 7am and the clock says 2:15am or so. I never know when that will happen. So this watch goes to the landfill. Too bad because I like the look and the display, but it's too unreliable to trust.