Compatible lenses:
Sony FE 16-35mm F/4 ZA OSS(Autofocus only) Works from 17mm to 35mm
Sony FE 24-70mm F/4 ZA OSS (No zoom available, use at 24mm only)
Sony FE 24mm F1.4 GM (Autofocus only)
Sony FE 28-70mm F3.5-5.6 OSS (Autofocus only, Manual zoom gear included)
Sony FE 50mm F1.8 (Autofocus only)
Sony FE 50mm F2.8 Macro (Autofocus only)
Sony FE 55mm F1.8 ZA  (Autofocus only)
Sony FE 85mm F1.8 (Autofocus only)

Materials :
Polycarbonate
ABS plastic
Optical glass
Stainless steel
EPDM rubber
O'ring sealed buttons with spring

Key features:
Vacuum Pump System port
High-quality optical viewfinder
Inbuilt leak detection sensor
Interchangeable port system
Synchro cable port
Fiber optic port
Multi-coated optical glass standard flat port
Stainless steel mounting plate 1/4" Thread
Reinforced metallic bottom plate 

Package Including:
1x Underwater housing for Sony A7 IV Black
1x Standard flat port
1x Zoom gear for 28-70mm lens
1x User manual
1x Spare O'ring
1x Shoulder & wrist strap
1x Lens protective cover
1x Dust-free cloth