Realtone Retro Electronic Dual Alarm AM/FM Clock Radio with MP3 Line-In Dual Alarm Clock Radio, wake to sleep to AM/FM Radio. Wake to radio or buzzer alarm Sleep to radio with auto-shutoff. Large, back-lit LCD display Dimmable Display. Sure-alarm battery back up. DST switch for simple Daylight/Standard time adjustments. Large, easy to use rotary tuning and volume controls Line-in jack to connect auxiliary sources such as iPod, MP3 players, etc. Wide range dynamic speaker for crystal clear sound. Dimensions: 4.02" W x 4.18" H x 3.62" D. Weight: 2.64 lbs.