Battery Operated Alarm ClockThis digital clock is powered by 4 x AA alkaline batteries only (not included), which can keep the time display for more than 12 months. The battery alarm clock is very easy to set up and take away, easy for kids, teens, senior to use, basic bedroom bedside table desk travel gift alarm clock. 3 Levels of Brightness& Auto DimThe LED Digital Clock with constantly 1.2'' red digits display. The LED digital clock with manually set the Bright-Medium-Dim 3-level brightness (day time), an it will enter into Night-mode and dim automatically at 8:00pm~6:00am. You don't have to push a button to see the time in the night, better for your eyes and more environmentally friendly. Bright True LED Time DisplayThe digital clock 24hour light up 1.2" large led time numbers can let you check your time clearly from a distance or even in the dark and without any operations. Note: SUPLEDCK LED clock is operated by batteries only, it can't be placed