After standing for 5 seconds, the alarm is off, saving you from up. Volume is non-adjustable.Put three AAA batteries, then the alarm can work battery is not includedYou can connect to computer via USB cable to music you like. It is suitable for office workers and studentsContemporary and design, matches with any type of room decoration.LED display shows the time when you step on it and also as a night light , shutting off after 20 secondsType: Alarm ClockDisplay Type: LED with numberMovement Type: electronicsThickness: 10mmApplicable : Office / Study Room / Bedroomcolour:Cream whiteMaterial:ABSsize:39 x 36 x 2cmPackage Contents:1 x Alarm ClockOnly the above package content, other products 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.