Dual XGPS200 Portable GPS and Battery Cradle for iPod Touch Allows iPod touch to be used for car and boat navigation, golfing, hiking, geocaching, cycling, or a number of other uses High-sensitivity GPS receiver provides location information to most GPS-aware apps Built-in rechargeable battery makes the GPS fully portable and provides up to 10 hours of use on a single charge Amplified speaker makes it easier to hear spoken navigation instructions, or use 3.5-mm audio out to connect to stereo Note:Windshield mounting kit, and 12V cigarette lighter adapter are not included - (XGPS200CK sold separately)