Upgrade Bluetooth Featured FunctionsAutomatically start the Bluetooth time sync function after plugging in, without manually adjusting the time, just connect Bluetooth "C3016", and it automatically sets the time and synchronizes daily. 6 Color Modern Night LightThe large LED digital wall clock has 4 monochromatic lights and 2 dynamic RGB lights to choose from, which can provide a wonderful atmosphere for your living room and bedroom. At the same time, there are 4 levels of brightness that can be adjusted by remote control, which can help you read clearly at night and accompany you to sleep in the dark.