Specially designed for Insta360 X3: Non-marking fit, better protection. Fully surrounded structure, one-piece design. Manual locking with built-in knob, firm and not loose. Cold shoe and 1/4′′-20 threaded holes for attaching accessories like microphones and lights. Built-in rubber gasket, intimate protection does not hurt the machine. Hollow Design, Easy to Operate: Not to cover the Type-C, battery door, speaker hole, switch button, smooth operation, easy to replace the battery. GoPro mount: foldable magnetic bayonet, strengthened structure, more secure connection. Thickened silicone, comfortable to touch, to avoid scratches on the lens.