The timer built in the power saving timer will be automatically closed after 4 hours without any operation. You can also set manually: 30 minutes, 1 hour or 3 hours:) 2 brightness adjustment methodadjust 30%, 60% and 100% brightness by wireless remote control, or adjust the brightness in steps by manually pressing the disc light:) High quality and durable LEDThe life of the under cabinet lamp is up to 30,000 hours. It will decorate every dark corner of your home:) Portable Battery Power SupplyEach battery light needs to be powered by 3 AA batteries (not included). The operating time of 3 AA batteries is approximately 40 hours. Note: It is recommended to use rechargeable AA batteries:) [Create the perfect atmosphere] Unlike the bright lighting we use every day, you don't need to install this light in your wine cabinet, kitchen and cupboard to create the perfect atmosphere.