IP21GV iHome Spacesaver App-Friendly Alarm Clock for iPhone & iPod with gunmetal finish... Wake to iPhone or iPod; Plays and charges iPhone and docking iPod models; App friendly unit allows wake up with free iHome+Sleep app and paid iHome+Radio app; Reson8 high fidelity neodymium micro driver; Time sync button to sync unit to iPhone/iPod time; Programmable nap and sleep timer; Snooze/dimmer bar adjusts Lo/Med/Hi brightness for clock display; Programmable snooze time; 100V - 240V universal voltage AC adaptor; Line-in jack to listen to other audio sources; 4 watts output.