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 precision 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 press 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 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 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 Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on voltage:100-240V Colour:black Material:ABS size:16.5 inch Power Supply: 2*AAA batteries(Not included batteries) Please note that the order must include the Bluetooth version Package Contents: 1 x clock 1 x remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.