Compatibility: Our protective case set is compatible with x4. Please note that our product is not sponsored or endorsed by, or affiliated with the it fits, including . Product Materials: The protective case frame is made of PC, high-elastic and flexible, and reliable, providing safety protection to that the lens is not worn. Hollow Design: With appropriate hollowing and reserved space, you can directly charge and replace batteries, bringing you a convenient user experience. No Burden: Our protective case set is compatible and , and keeps your camera protected while without causing and burden, so you can take it during your whole trip. Color: As Shown Material: PC Package Contents: 1 * Action Camera Frame Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.