sdber&reg; Fashion Cube Mini Black Wood Grain Blue LED Light Alarm Clock with Time and Temperature Display & Sound Control portable digital desktop alarm clock for home & office, perfect for travel use. Produced with natural material bringing you a healthy and fashionable low-carbon life, and number dispaly is available at dark night Alarm Clock with "beep" lasting for 1 minute. SIZE: 6.4*6.4*6.4cm, Weight: 140g Daul Power Supply: 3*AAA dry batteries(not included) or DC 5V/500mA