Special Design for Sony A9 II Camera to make sure all control button available when using underwater
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 , work with Seafrogs VPS-100 Pre-Dive vacuum leak check system
Water resistant up to 40meters (130fts waterproof/Shockproof) & Built-in leak detection sensor
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)