Wireless Clock, Analog, 12 Hour, Shape Round, Overall Dia. 13-1/4 In., Face Dia. 13 In., Width 13-1/4 In., Depth 2-3/8 In., Height 13-1/4 In., Power Source Lithium Battery, Mount Wall, Features Automatically adjusts for Daylight Savings Time and resets for power outages, Case Material ABS Plastic, Case Color Black, Face Color White, Lens Material Polycarbonate, Connector Type Wireless, Interface with RF Transmitter 2LMU3, Includes Security Bracket, Security Bracket Key, Mounting Template