ShotKam is a waterproof, lightweight, and durable video camera that mounts to your shotgun barrel. Designed as a training tool, it records video of every shot. With built-in Wi-Fi, you can instantly replay your videos on any iPhone, Android, iPad, or Tablet. ShotKam intelligently detects barrel movements to know when to record video. The movements of your gun are revealed by the crosshair in the video (X in the middle).