Large Display Digital Clock 4.5" LCD screen, bold large numerals display time (12 Hr/24 Hr), temperature (?/?), date, alarm time. Only Battery Powered This wireless alarm clock design lets you put it without any hassles of searching for an electric port. It can be placed almost anywhere in the house because of its size. Big Snooze Button The SNOOZE button is designed BIG for easy searching. Press the SNOOZE button, the alarm will pause for 5 minutes and then sound again. Smart Sensor Light Turn on sensor switch, the clock will be automatically give off soft blue light in the dark . NOTES 1.Powered by 3* AAA carbon battery (Not Included). Don't use Alkaline battery. Don't mix old and new batteries. 2.The sensor light only useful when the sensor switch on.This light is only noticeable when the environment is dark. SPECIFICATION Weight:6.63 ounces Dimensions:5.31 x 2.95 x 1.77 inches Material:plastic Power Supply: 3 x AAA carbon batteries Only (Not Included).