Sea Frogs Sony A7S III / A7 IV Salted Line series housing First-Time Setup Guide.

Sea Frogs A7siii Salted Line series:
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Sea Frogs A7iv Salted Line series:
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The Sea Frogs A7SIII and A7IV Salted Line series camera housings are waterproof up to 40 meters (130 feet) and specifically crafted for the Sony A7S III and A7 IV.
SeaFrogs Salted Line, A7S III / A7 IV housings, lets you control all camera functions (except the joystick and Still / Movie / S&Q dial) underwater up to 40 meters (130 feet). The standard bayonet with a 90mm diameter allows for using any Sea Frogs dry flat and dome ports, except ports designed explicitly for A6xxx and RX1xx camera housings.
The Salted Line, A7S III housing, outshines the standard Sea Frogs version with upgraded features like stainless steel latches, a larger LCD window, and compatibility with a detachable 2-stage pistol grip trigger. Noteworthy is the 50% stiffer spring stiffness in control buttons, enhancing tactile feedback. Perfect for underwater and surf photography, this advanced housing ensures durability and precision, optimizing the shooting experience for Sony A7S III / A7IV users.

[@jackiechan8138]

Hi SeaFrog team, what is the difference between the Salted Line series and the Sony A7 IV NG case?