... supply: 1. Mute function: it is absolutely no sound generated, because it is electronic interior design, it ... from the general alarm clock which generates ticking sound. 2. Mirror surface: its surface looks ... , AC power 5. Alarm functionVery good choice for using in the office, living room, study, etc. 1 ... an internal battery for the clock to work, but the LED does not display.Dimensions, specifications, ...