ZGR-2b, Wireless GPS Unit and Timer Remote Controller works with Nikon Cameras and iPhone, Supported Cameras New ZGR Pinout just launched on Indiegogo. A short url is http://igg.me/at/pinout Wireless GPS Unit and Timer Remote Control Accessory works with Nikon DSLR Camera and Apple devices(iPhone,iPod Touch or iPad) It was made For location shooting, Shutter release, Long-exposure,Continuous-exposure and Time-lapse It provides GPS Uinit, remote shutter release function, auto-focus function and a lock function for bulb. Take with Shake phone and volume button. ZGR-2b Supported Cameras: NIkon D7000, D5100, D5000, D90, D3200, D3100, D600, D5200CCOOLPIX P7700