Donnal 4" Silent Quartz Analog Twin Bell Alarm Clock with Nightlight and Loud Alarm, Multi-Color Choice (Black) Shell material: high quality cold rolled steel. Electroplating guarantees colors keep shinning and bright Silent, no ticking to ensure a good sleep and best working environment Night light is perfect at night. Simply press the button when staying in bed Super loud alarm sound for heavy sleepers 1 AA battery operated (Not Included)