The Pioneer SmartCradle for iPhones is compatible with all GPS enabled apps, including MotionX-GPS Drive and is the first of its kind to incorporate a built-in gyro sensor and accelerometer combined with an external antenna for improved GPS reception and location accuracy, even if GPS signals are limited by high rise buildings and tunnels.
The P7700's hot shoe allows for compatibility with Nikon Speedlights (SB-910 and SB-700) as well as the GP-1 GPS unit and ME-1 external stereo microphone.