Best-mall 4" Simple No Ticking Silent Quartz Table Bedside Lazy Twin Bell Alarm Clock with Nightlight and Loud alarm (Letter) The metal clock is with super mute movement, no ticking to ensure a good sleeping or working environment Special Nightlight design, Convenient and practical, There is no need to turn on the light to see time, also cant disturb your family to have the rest. The best choice for the heavy sleepers with this super loud alarm sound Size: 16.5cm*12cm*6cm,4 inch Powered by AA Battery(not included),Please use carbon battery only (alkaline battery or rechargeable battery which may have influence on the life span of clock movement, as well as the accuracy of the time).