Features: Waterproof depth is up to 40meters, suitable for underwater shooting such as swimming, diving, surfing, etc underwater activities. Perfectly integrated for Hero 11 10 9 Black action cameras body, beautifully coordinated, and easy for installation. High hardness aluminum-alloy material can protect the camera from damage and effectively prevent scratching. The waterproof shell lens is made of imported high-permeability 9H tempered glass, with high light transmittance and restored camera clarities. The integrated double cold shoe interfaces designing can be externally connection with fill light, microphone, etc., and the unique lock designed on the top can firmly lock the waterproof shell and not easy to loosen. Specifications: Material: aluminium-alloy Size: Approx. 90x43x100mm/3.54x1.69x3.93inch Support Water Depth: 40Meters/131ft Waterproof Level: IPX8 Product Features: Waterproof, Dustproof, Drop-proof, Pressure-proof Applicable Model: for Hero 11/10/9 Black Action Cameras Package Includes: 1x Waterproof Housing 1x Screw 1x Mount Base note: Please allow 0-1cm error due to manual measurement. Please allow for slight color difference due to different display resolution.