HITO Digital Clap-on Fashion Wood Grain White LED Desktop Alarm Clock - Time Calendar Thermometer - Sound Control - Latest GEN Display: This clock can be set to only display time. OR clock displays time, date & temperature in turn automatically (Default); Sound control function: when sound control function is on, the LED display turns off after about every 15 seconds, and then you clap hands to activate the screen display to know time. BUT sound control can be CLOSED, so the clock will display time constantly, all the time. Alarm: can set up to 3 alarms. Desk Clock: 12/24-hour format; Materials: This Clock is made of MDF wood (not real wood) and graining coating. Built-in batteries make clock work in case of power failure; Power Supply: DC 5V` 0.5A, or 3X AA batteries.