Aubig Mini Cube Desk Bed Bookshelf Led Digital Alarm Clock Voice Control Time Temperature-Blue Light Voice control;Time and temperature switch display;Power source:4x AAA batteries or USB Temperature display: C/F show model; Time: 12/24 show model Don't interfere with your sweet sleep,because display brightness automatically reduced by half from 6:00pm to 6:00am Fashion decoration on the head of a bed, a bookcase Package included: 1x LED Clock, 1x USB Charging Cable, 1x Instruction