The SHARP SPC089D is a simple easy to use clock that fits in any room. The alarm clock offers easily accessible top button controls. Want to pause the alarm for a few more minutes of sleep? Press the snooze button right from your bedside. Need to turn off the alarm in a flash? Simply flip the alarm switch to OFF at the top of the alarm clock. This clock is electric operated; the battery backup does not power the clock. The battery backup is used for storing the time and alarm settings if the power is interrupted. During battery backup the clock’s display will not be lit. Once the power is restored the display will re-light. Check the time to make sure it is accurate and adjust if necessary. Digital alarm clock with a 0.6-inch Red LED display for easily checking the time at a glance. Easy to See and Easy to Access Top Button Controls for simple use. 9 Minute Snooze function . AC powered with Battery Backup. Battery back-up is used for storing the time and alarm settings if the power is interrupted. During battery backup the clock’s display will not be lit. Once the power is restored the display will re-light. Backup requires 1 x 9V battery (Not Included). Clock Dimensions: 4.63” x 1.95” x 2.8” – The perfect size for a small and easy to use clock!