Loud alarm clock is equipped with a vibrate bed shaker, wake up quickly,suitable for heavy sleepers adults,hard of hearing teenagers,deaf impaired senior.The bed shaker has a night light function, 8 levels of brightness can be adjusted, and can also be used as a bedside lamp. Digital clock uses DC-5V/1A USB power supply, equipped with 1 USB output interface, which can charge your mobile phone and tablet computer; Electronic clock comes with CR2032 backup power, which can be saved when the power is disconnected data. Desk clock uses a 7.4inch HD large display, 3 level of brightness display, you can manually adjust the brightness according to personal habits; Table clock has a built-in light sensor that can be auto adjusted according to the indoor light intensity display brightness. LED clock is equipped with 10 white noise ringtones to choose from, and can also to promote sleep; Music clock has 15 levels of volume(60-120dB), you can adjust the alarm according to the depth of sleep Ring volume,suitable for deep sleepers. Alarm clock can be set with 2 alarms to meet the different needs of daily use.the alarm time lasts for 2 minutes to that you can wake up,The top snooze button design can be easily turned off, allowing you to get 5-60 minutes (settable) of time. color:Black body white word Material:ABS size:172 x 43.8 x 91mm Package Contents: 1 x electronic clock 1 x USB cable 1 x vibrator 1 x English manual Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.