Dianoo Fashion Square Mini Black Wood Grain White LED Light Alarm Clock with Time and Temperature Display & Sound Control - USB/AA Battery Powered (Black Wood + White Light) Portable digital desktop alarm clock for home & office, perfect for travel use. You can switch the time, date, temperature or display model. 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. Daul Power Supply: 3*AAA dry batteries(not included) or DC 5V/500mA