DescriptionSimple - Connect the ChargeBlock and keep using your iPhone or iPod while it recharges. Compatible - Made for iPhone and iPod certified- recharges any model iPhone and iPod with a dock connector (does not work with iPod shuffle). Easy - Six blue LED lights indicate charging status and three red LED lights indicate dis-charging status. Fast - Recharge the ChargeBlock XL with mini-USB (cable included) or charge your iPhone/iPod and the ChargeBlock at the same time. Operating times (Based on iPhone 3GS) - Up to 19 hours of audio, 5 hours of talk, 5 hours of video and 4.5hrs of internet (results vary by model).Real time price comparison from PriceGrabber