The ip45 is ready take your music to new realms. the ip45 allows you to wake anywhere to your custom ipod or iphone playlist or to any of 6 fm presets at different times on different days with our 7-5-2 feature. the ip45 includes bongiovi digital power station processing circuitry, eq controls and 3d sound for an exceptional audio experience. the built-in lithium-ion battery is rechargeable, so you can enjoy music without worrying about batteries.