Seafrogs [40M/130FT] Underwater Housing Waterproof Case w/ 6 Inch Dome Port Kit for Sony A7R IV A7R4 ILCE-7R IV Matching with Sony FE 16-35mm F/4 28-70mm F3.5-5.6, 12-24mm F4 G Lens-Black

Features: Special Design for Sony ILCE-7R IV Alpha 7R IV Camera to make sure all control button available when using underwater, Come with houisng ( Mounted with Standard Flat Port), also a Seafrogs wa005-F dome port The waterproof cases are not only for diving, with these housings, you no longer have to worry about your camera if it is raining, snowy or dusty VACUUM PUMP SYSTEM PORT: Fitting with Seafrogs VPS-100 vacuum pump system, for checking the water tightness of underwater camera housing before submerging Inbuilt leak detection sensor, Interchangeable port system, 40m / 130ft Dept rate, and Stainless steel mounting plate 1/4" Thread Please kindly note that Silicone Grease (Purchase separately) will help O ring Well seal this underwater case. ( Please contact seller If you are not sure what kind of Silicone Grease will work)