Sony GPS-CS1 GPS Device for CyberShot Digital Cameras Keep track of where and when your digital photos were taken with satellite precision No need for complex set-up or connection; just turn on the GPS unit and check its positioning status Holds approximately 360 hours (31MB) of data, equivalent to one month of tracking recorded at 15 second intervals Up to 10 hours of use with alkaline batteries or 14 hours with Ni-MH batteries Compatible with Cybershot DSC-S500, S600, S45, W30, W50, W70, W100, H2, H5, T30 and Sony Alpha DSLR-A100