Thread mount: 67mm (46mm and 52mm with included thread mount adapters) * Construction: 2 groups/2 elements * Material: Optical glass lens, Aluminum alloy barrel * Magnification: 0.65% * Weight: 350g * Dimensions: (8.7 x 4)cm with adapter, (8.7 x 3.6)cm w/o adapter * Depth rating: 50M * View angle: 75 deg underwater / 87 deg above water