A-szcxtop(tm) LED Wood Grain Cuboid Digital Clock Alarm Thermometer Temperature Function Clap on Sound Control Clock (Red) Displays Time and Temperature alternately. It also works in voice mode. Make some noise (clap your hands, rap on the table or pat the clock) nearby can wake it up Time display 12-hour or 24-hour mode Power: 4 x AAA (not included) or USB cable (included) Size: 5.9 x 2.8 x 1.6" / 15 x 7 x 4cm