T Tocas 18-inch Jumbo Digital White LED Wall Clocks w/Thermometer, Calendar, Snooze, Remote Controller Black Background Constant lighting, fits anywhere, especially airport, stadium, library, school ect. Whatever indoor or outdoor.(not waterproof) Function:Led Clock,Thermometer,Calendar,Alarm,Snooze,Remote Control,Countdown Support(Hour,minute) LED Digital Wall Clock ,18-inch /44*15*2cm LED Dot matrix Technology,More stable and Reliable Power by AC adapter and button cell(CR2032) backup