Features: Designed specifically for ACTION 3, the frame for professional creation. The bottom retains engine magnetic suction quick installation design. The upper part equipped with cold boot mouth, can be external photography lamp and microphone and other external equipment. The metal cage side designed with magnetic quick mounting interface and 1/4 thread interface. The side window reserved for normal charging when the cage used. The battery compartment adopts a clamshell design, which can be quickly removed and replaced with the battery and memory card without removing the metal cage, easy to operate. A variety of interfaces reserved, can connect a-variety of external photography equipment The horizontal and vertical switching freely Open on the side to ensure that the TYPE-C interface not affected Specifications: Material:Aluminum Alloy Applicable Models: for OSMO Action 3 Camera Colour: As Shown Size: approx 8.14X5.44X3.38CM/3.2x2.14x1.33in Package Includes: 1 PC x Alloy Frame note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is1-3cm.