XREXS Large Digital Wall Clock Bluetooth Sync, 17.2" RGB Color Changing Digital Clock with Remote Control, Adjustable Brightness Grandfather Clock, Temperature for Home, Gym and Classroom

Easy to set up. My kids love the different colors. The temperature seems to be accurate. Easy to see and read.

Best clock ever! Its big and shows the date, time and temperature which was very handy when my heat went out last winter. I love that it plugs into the wall, yet has a battery back up and Bluetooth so that the time and daylight savings is good even when the power goes out. The brightness is adjustable and if you lose the instructions, just come to the ad here and the instructions are here too. Its easy to screenshot them if needed.

Best clock ever easy setup will buy again

I have an atomic clock in my living room which I really like. I thought it would be nice to have one in the kitchen and since it was for the kitchen I wanted it to have a countdown timer. I looked at many atomic clocks and could not find one that I liked but then I saw this bluetooth clock and thought it would work. When it arrived and I tried to set it up, I could not get it to show the correct time. I spent more than an hour trying to get it right with no luck. Then I remembered a comment by another reviewer and I removed the batteries, unplugged the power cord and waited a few seconds before re-connecting both. That did the trick, the time was correct. Since then I have had 3 power outages, and each time, when the power came back on, the display was gibberish but was easy to fix by bringing my phone near the clock and turning it on, then removing one of the batteries and unplugging the cord, then reconnecting. Finally I decided that the battery backup doesn"t work and is of little use anyway, so I removed the batteries and left them out. Other than the battery issue, all of the features work well and I like it a lot.

This clock has a big bright adjustable display. The problem with the clock is that it is inaccurate enough to loose two seconds per day. The clock is programmed to to do an update and re-sync every six hours with WWVB through your phone's Bluetooth connection. That process works IF your phone happens to be in the same room as the clock and IF there are no other Bluetooth connections to your phone. Otherwise the update is useless and has to be reset manually. I noticed another version of this clock that uses WIFI instead of Bluetooth. Seems like a better option. Buy this only if accuracy doesn't matter or if you don't mind manually updating it every day.

Easy to set up & use. I have mine in my classroom and my students and administrators love it. I set timers throughout the class period and students love being able to easily see how much time they have left. I appreciate how you can adjust the brightness, color, and loudness. Anyone can read the time no matter where they are in the room & that’s exactly what I wanted. No one has asked me “what time is it” all year, and as a teacher one less question a day is a big deal.

Very bad product it worked for only couple of hours and nod te remote doesn't work at all

Great clock. Super visible. But … loses time and I can’t seem to get it to Bluetooth to my phone for more than about 10 seconds. It’s usually a couple minutes behind, but it gets me going in the morning. Also, can’t seem to figure out how to change the color, but that’s minor for me.

Muy buen producto, lo compré como regalo y le encantó. Excelente calidad.

Nice bluetooth sync clock. Working fine and syncing with mobile seamlessly for accurate time and date. No need to adjust the time manually as in the RTC based clocks.

Different coloured lights easy to manipulate.

Bigger than i thought. Perfect for what in need.

C’est le deuxième que j’achète et le premier il y a déjà des segments de chiffres qui sont pâle. Très déçu