Is Smart Device : No Form : Single Face Function : Temperature Display Length : 166mm Width : 47mm Shape : Geometric Diameter : 25mm Weight : 88g Model Number : 6639 Screen Type : LED Motivity Type : Digital Display Type : DIGITAL Feature : Calendars,LUMINOVA Material : Plastic Origin : Mainland China Type : Alarm Clocks Product Show Body Color :Black Body Shape:Rectangle Words:As picture show Material of Screen:Mirror Size: 16.6x4.5x2.5cm Voice control: clap your hands or knock on the table to wake up the alarm clock NOTE 1:Take the protective flim on Clock Screen,it will be brighter. NOTE 2:It will go off after 10 seconds when only powered by AAA Battery(Not Included) Clap your hands or knock on the table to wake up the alarm clock If you want screen always on,please plug in use. Main Functions Two display modes: 1. Display time only 2. Time, date and temperature cycle display Three gear brightness Alarm function: two alarms with single off or double off daily alarm, snooze function Timing and countdown function: Up to 24 hours Voice-activated wake up:Voice-activated wake up in AAA battery mode6 Powered by DV5V or 3 AAA batteriesD daylight-saving time