I purchased this for use in my P2V "Phantom II Vision Drone/UAV. It allows you to experience flight through it's FPV function. Unlike other FPV Goggles on the market such as "Fat-Shark", this unit allows you to see as a Fighter Pilot would use in a HUD "Heads Up Display" Keeps bird in LOS. Also great for viewing movies off Netflix. Watched American Sniper on plane to Florida just last week. As I use my Inspire much more these days and would rather invest in equipment for it, I've priced these to sell at $375 firm! DJI App loaded and ready to go! These were purchased in February 2015 for $699. They have only been used a handful of times and are like new. Please PM me if interested.