The Marware Game Grip offers maximum versatility in gaming for the iPhone 3G and iPod touch 2G. In addition to a radically comfortable handheld game controller, you also get two high-grade silicone skins that make great stand-alone carrying solutions for your iPhone 3G and iPod touch 2G. Silicone handle-grips on the controller provide comfort for longer gaming sessions, and a unique cord management solution allows you to use your headphones and charging cable while you play. The Game Grip also supports an optional, removable battery pack solution from Marware (sold separately) that can give you added power while gaming. Simply slide the battery pack onto the back of the Game Grip, attach the cable, and you won't even know it's there.