Features: 1.MULTIPLE POWER SUPPLY METHODS: The digital clock is powered by USB cable and 3 AAA batteries (not included), with power saving mode, longer service life. 2.LED DISPLAY: Desktop digital clock with large LED display allows you to check the time at a glance even when you are far away. Combined alarm clock and time display. 3.DECORATIVE: Stylish modern design is not only a digital clock for the office, but also a decoration for the bedroom or living room, adding elegance to any space. 4.COMPACT: The digital alarm clock is small enough to fit anywhere on a bedside table or nightstand, and the LED display is large enough to be seen from the entire room. 5.MULTIFUNCTIONAL: Displays time, date and temperature. Sound activated on battery power, clapping your hand turns the display on, and it automatically turns off after 16 seconds. specification:Item Type: Digital Alarm Clock Material: Plastic Size: Approx. 16 x 6cm / 6.3 x 2.4in Case Color: Black Display Type: Digital Display Screen Type: LED Battery: 3 x AAA Batteries, USB (Shipped Without Batteries) PackageList:1 x DigitalAlarmClock 1 x Data Cable 1 x English Manual NoteManual measurement, please allow some errors.