Compatible lenses:
Sony FE 28-70mm F3.5-5.6 OSS (Manual focus available with zoom gear)
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 50mm F1.8 (Autofocus only)
Sony FE 50mm F2.8 Macro (Autofocus only)
Sony FE 55mm F1.8 ZA Carl Zeiss Sonnar T* (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:
Interchangeable port system
Vacuum Pump System port
Sync cable port
High-quality optical viewfinder
Inbuilt leak detection sensor
Fiber optic port
Stainless steel mounting plate 1/4" Thread
Reinforced metallic bottom plate 
Multi-coated optical glass lens port

Package Including:

• 1x Underwater housing for Sony A9 II
• 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