The Bullet Time Cord  for the  Insta360  ONE X3, ONE X2, ONE RS (excluding 1-Inch 360), ONE R, ONE X, or ONE camera allows you to spin the camera overhead in Bullet Time mode. Screw it into the 1/4″-20 thread on the bottom of the camera, pull out the retractable 43″ cord its full length, and then swing the camera above your head in a circular motion. A rubber ring on the bottom of the 1/4″-20 screw ensures that no damage will be done to the bottom of your camera where the 1/4″-20 threaded hole is.