ONKYO Remote Interactive (RI) Dock for iPod Compatible iPod models - 3rd Generation iPod (Touch Wheel), 4th Generation iPod (Click Wheel), iPod mini, and iPod Photo. Timer Play function allows the Onkyo system timer to play back from your iPod at a specific time Sleep Timer function switches unit to Standby mode after a specific programed interval iPod batteries automatically recharge in the RI Dock The S-Video output on the RI dock can output a photo slide show