Features: 1.This electronic clock is simple and compact, beautiful in appearance and stylish design. 2.A variety of charging methods, USB cable and 3 AAA batteries can be powered, with power saving mode, longer service life. 3.The LED numbers are bright and clear enough to see the time in the dark. 4.Quiet operation, will not disturb your sleep, suitable for home and office use. 5.Multifunctional electronic clock, which can display time, date and temperature, to meet your different needs. 6.When using battery power, can be voice?activated, and the display can be turned on by clapping your hands, and it will automatically go out after 16s. specification:Item Type: Electronic Clock Display Type: Number Display Type: LED Battery: 3 x AAA batteries/USB (delivered without batteries) Size: Approx. 6cm / 2.4in 16cm / 6.3in 1.8 ~ 2.5cm / 0.7 ~ 1in PackageList: 1 x Electronic Clock 1 x Data Line 1 x User Manual