Features 1、[IPX8 Waterproof Rating] 40 meters of pressure resistance and waterproof, PC shell, durable, can be used for diving, snorkeling, surfing, rafting and other underwater photography sports, record the wonderful underwater world. 2、[Abundant Interfaces] With 1/4in stainless steel screw hole on the bottom and cold shoe mount on the top, allowing you to connect external fill lights, flashes, diving photography brackets, etc. to meet different photography needs. 3、[High Compatibility] The waterproof case is designed for the 1:1 buttons and knobs of the camera, and all the functions of the camera can be operated normally. It is suitable for A7S III body with for FE 28‑70 F3.5‑5.6 OSS lens. 4、[Shutter Lever] The underwater diving waterproof shell adopts a humanized shutter lever design, which increases the trigger shutter area and makes it easier for you to find the shutter when using it. 5、[Anti Lost Rope] With hand rope and shoulder strap, it can be used during underwater photography to prevent accidental loss of equipment. The front of the lens barrel is made of high definition optical glass with high light transmittance. 6、[Safe Use] The waterproof case is equipped with a safety lock, a silicone sealing ring, a water seepage alarm, a vacuum detection hole, a data synchronization interface, and an optical fiber flash trigger interface. Specification Item Type: Camera Diving Housing Material: PC, Optical Glass, Stainless Steel, Silicone Rubber Weight: Approx. 2334g / 82.3oz Waterproof Depth: 40 Meters Waterproof Structure: O Ring Sealing Applicable Temperature: 0-40℃ Applicable Models: for A7SIII A7SIII A7S3 Applicable Lens: for FE 28-70 F3.5-5.6 OSS Waterproof Shell Size: Approx. 219x193x176mm / 8.6x7.6x6.9in Battery Type: Button Battery CR1220 x 1, 40mAh (Built In Battery) Package List 1 x Camera Waterproof Case 1 x Focus Wheel (Placed in Waterproof Case) 1 x Body Dust Cover 1 x Lens Barrel Dust Cover 1 x Hand Rope 1 x Shoulder Strap 2 Pack x Anti Fog Sheet 4 x Spare O Ring 2 x Removal Tool 1 x Cleaning Cloth 1 x Base (Installed) 2 x Mounting Screws (Installed) 1 x Manual