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 1This electronic clock is simple and compact, beautiful in appearance and stylish design. 2A variety of charging methods, USB cable and 3 AAA batteries can be powered, with power saving mode, longer service life. 3The LED numbers are bright and clear enough to see the time in the dark. 4Quiet operation, will not disturb your sleep, suitable for home and office use. 5Multifunctional electronic clock, which can display time, date and temperature, to meet your different needs. 6When 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. 1 x Electronic Clock 1 x Data Line 1 x User Manual