Have to Plug-in: This is a plug-in wall clock. Not battery operated. Memory batteries (not included) only maintain memory function during power outages 16.5" Large LED Display: The digital wall clock has a large 16.5-inch colorful screen that displays 7 pure colors and 4 RGB colors. The base features 8 pure colors and 1 multi-color night light with manually adjustable brightness Ideal for Various Occasions and Users: Big digital wall clock suitable for your home and workplace. Whether in the living room or bedroom, kitchen, staircase wall, garage, office or classroom, farmhouse or warehouse, gym or shop and any other places. Ideal gift for friends, family and the elderly Wall-Mounted and Desktop Design: It can be wall-mounted or elegantly stand on the desktop, with remote control operation for added convenience. Set the time (12/24 hr format), 2 alarms or countdown timer, date or week without getting up from your seat Auto DST and Auto Brightness: It will automatically swit