Model Number: AOI UWL-400A
Description: Underwater 0.50X Wide Angle Conversion Lens (Not Included QRS-01-AD3)
Lens Coating:
All Glass Lens Elements with Multi-layers AR Coating,
Front PC Dome Lens with Hard Coating
Field of View (Diagonal): Underwater 120°(with 25mm Lens)
Magnification: 0.50X (on land / underwater)
Minimum Object Distant: 0 mm to the Front Dome Lens (on land / underwater)
Mount System: M52 Thread changeable for quick release adapter
Depth Rating: 100 Meters / 330 Ft.
Lens Barrel / Lens Hood: ABS / Hard Anodized Aluminum Alloy
Weight (On Land / Underwater): 
606 g  (on land)
224 g  (underwater)
Dimensions: 121.8mm (D) X76mm (H)
Standard Accessories:
Dome Lens Hard Cover (DHC-01)
Rear Lens Cap (LRC-01)
Lens Secure Line (LSL-03)
Carry Case(LPC-04)