Description : 0.50X Underwater Wide Angle Conversion Wet Lens Lens Construction :5 Elements in 5 Groups 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 Depth Rating : 100 Meters / 330 Ft. Bezel / Body Material : ABS / Hard Anodized Aluminum Alloy Weight (on land / underwater) 591g (on land) 200g (underwater) Dimensions : 121.8mm (D) X76mm (H) Standard Accessories Dome Lens Hard cover Rear Cap Lens Secure Line (LSL-03)