With the Alarm Clock Classic from Bellman Symfon you don't have to worry about oversleeping or waking up everyone in your household. This clock model features: Extra loud audible alarm Powerful bed shaker Battery backup Smart Snooze The Alarm Clock Classic from Bellman Symfon includes a powerful bed shaker and a built-in audible alarm that increases in sound volume, so you can wake up without disturbing others. Features: Loud 100+dB ascending alarm that spans multiple frequencies so even if you have high frequency hearing loss you won't miss the alarm Alarm timeout 20 minutes Powerful bed shaker (does not emit sound - see the Alarm Clock Pro or Alarm Clock Visit) "Smart" snooze automatically reduces in time from 9 to 2 minutes in two minute intervals, so you don't miss that important meeting Large LCD display with adjustable backlight Battery backup powers all functions during a power outage, including bed shaker (4 AAA rechargeable batteries not included) 12/24 time format Dimensions: 4.7" W x 4.3" H x 3.6" D Weight: 13.7 oz; 390g including batteries Warranty Two year warranty Brand Bellman amp; Symfon Product Type Alarm Clock Alarms Vibration, Sound Alarm Clock Style Desktop Lamp Plugin No Built-In Transmitter No Dimensions 4.7" W x 4.3" H x 3.6" D Battery Backup Yes