The Nikon GP-1A Black GPS Unit is a camera accessory designed for use with Nikon cameras, specifically the Nikon 1 series, D40X model, D700 model, and D40 model. Manufactured by Nikon, this GPS unit is compatible with Nikon cameras. It allows users to easily add GPS functionality to their Nikon camera for location tracking and image metadata capture. The sleek black design of the GP-1A unit complements the overall aesthetic of Nikon cameras, making it a practical and reliable accessory for photography enthusiasts.