Features: This metal housing frame is hollow-carved design, just enjoy your recording and shooting. Delicate Design, easy to install. Lightweight. Battery Cover fits well with this for case. You can save the for time by inserting the cover without charging it, perfect for continuous shooting, very easy to install, all handling are very simple. It can also prevent your camera from normal damaging or caused by overheating. It could be mounted on bicycles, hand rack, helmet, chest belt, or other kit etc. With a quick release metal back door will save your disassemble for time. Your camera will be safer during high-velocity sport or daily using. Specifications: Material:Metal Size:Approx.9x5x8cm/3.54x1.97x3.15inches Compatible for Gopro9 Color:Silver Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Protective for Case