What is underwater housing for?
The waterproof housing case is essentially a camera case for your Digital camera /Smartphone, but one that allows full control of the camera/ Cellphone when diving, is waterproof and pressure-proof, so the case is designed for Sepecfic camera& Lens models, you should check the compatible list before purchasing.

Matched Camera: for Nikon Z7, Compatible with Nikon Z6
#Please note NIKON Z6 II / Z7 II cameras are not compatible with this unit.

Compatible lenses (with WA005-A 6" Long Dry Dome Port)
for Nikon NIKKOR Z MC 105mm f/2.8 VR S Macro
for Nikon NIKKOR Z 24-120mm f/4 S
for Nikon NIKKOR Z 14-24mm F/2.8 S
for Nikon NIKKOR Z 24-200mm F/4-6.3
for Nikon NIKKOR Z 85mm F/1.8 S
for Nikon NIKKOR Z 28-75mm f/2.8 Lens
for Nikon NIKKOR Z 20mm f/1.8 S
for Nikon NIKKOR Z 24-200mm F/4-6.3
for Nikon NIKKOR Z 24-70mm f/4 S
for Nikon NIKKOR Z 24mm f/1.8 S

Key Features:
The inbuilt leak detection sensor
Interchangeable port system
Optical viewfinder/ Synchro cable port/ Dual Fiber-optic port
Stainless steel mounting plates (2 x 1/4" -20)
VPS-100 vacuum system port

Package Includes:
1x Underwater housing for Nikon Z7/ Z6
1x WA005-A 6" Long Dry Dome Port
1x Shoulder & wrist strap
1x Spare O'ring
1x User manual