The lovely heart-shaped Sweetheart Vibrating Alarm Clock will wake up Deaf, hard of hearing and even the deepest of sleepers! With its hot-pink heart design, multi colored display, and 5-level dimmer function, it's a girl's BFF as well as an alarm clock. The earth-shattering bed shaker and bright flashing lights will get you jumping out of bed each morning. And if that doesn't put your feet on the floor, the 113db alarm is so loud it will rattle your windows and force your eyes open. 113 db extra-loud alarm (with adjustable tone & volume control) User selectable snooze time 1-30 minutes your choice, User selectable alarm duration from 1 -59 minutes, Vibrator strength control, Dual power capability, model SBH400ss-v2 and v3 requires a travel adapter for 220 volt power. This adapter is the type that converts the prong configuration only Improved battery backup, will back up the time and alarm settings up to one week, New green power technology now uses 60% less energy