Large Digital Wall Clock 16.5 Inch Bluetooth Auto Time Sync Led Digital Clock Display Calendar Clock US Plug

5. Outlet Powered with Memorized Backup Battery: Our large wall clock is outlet powered, no worry about battery out of power, memory battery is only to make time system continues to operate after power outage, not need recalibration time after outage 4. 9 Groups and Easy to Hang: groups T1-T8, timing range: 0:00:00-29:59:59, T9 timing max up to 40 days; No need to drill holes, 't damage your wall, complimentary double sided tape allows hanging board firmly attached to the wall 1. Bluetooth Automatic Time Sync: 16.5 inch large digital wall clock with Bluetooth 5.3 technology, not need manual time-setting, digital calendar can one key to sync phone time, automatic calibration time 4 times per day, enjoy convenience and 2. 11 Color Modes: Digital wall clock large display with: 6 single colors, 3 RGB flowing gradient colors, 2 changing Colors; 4-speed manual or automatic brightness adjustment, customizable your own color according to your preferences and environment 3. Multiple Functions and Convenient to Use: This LED wall clock can mode button or use the Remote Control to operate, operated from up to 32 ft, have 9.5ft long power cord; very suitable for Gym Home Garage Office Classroom and limited mobility