Glovion Ac/ Battery Powered Cute Cyan Cloud Shape Sound Control Digital Alarm Clock Ac Adapter Included Creative Cloud Shape Approximate size:158*100*42mm Display Time & Date, with Alarm&Snooze ;24 Hour time format ONLY Can put on the desk or hang on the wall Creative Alarm start function: Gently shake or clap the alarm when the alarm activation time display, automatically OFF after 5 seconds Dual Power: a.Dry Battery not included) you can use it as portable ; it has voice control function to save energy . b.With AC adapter (included) , you can power it to save the battery cost, no need battery.