?Heartwarming Reminder?1. 3*AAA battery (not included) is mainly used for backup data. We recommend using USB power supply; 2. Comes with charging cable, without adapter. 3.If there are any problems with the use or function of the product, or if the product is defective/damaged, please contact the seller first, we will do our best to solve the problem for you. ?2 Power Supply Methods?When USB power supply, the screen is always on. When powered by 3*AAA batteries alone, the screen will automatically turn off after 10s. You need to manually press the button to light up the screen and the brightness cannot be adjusted at this mode. ?Easy Snooze?When the alarm sounds, the alarm icon on the screen will flash, and the snooze function allows you to get an extra sleep time for 5 minutes (default). Press any buttons to pause it (except Snooze/Light button), and it will sounds again after 24 hours. ?Adjustable Volume & Brightness?With 3 gear volume adjustable: L01 (55DB), L02 (70DB), L03 (90dB), you can choose according to your needs. And have 4 gears of brightness adjustable: High - Medium - Low - Off. Suitable for deep sleepers, adults and teens. ?Multi-function Display & 8 Color Modes?The LED alarm clock supports display the alarm icon, DST icon, 12/24H format icon, volume icon and time on the same screen. It also has 8 color modes that can be set freely. A simple alarm clock but cool. ?No ":" Flashing?New upgrade! The ":" between the hour and minute of this bedroom alarm clock no longer flashes. You will no longer be bothered by this interruption when you are resting or sleeping.