Attention: 
<br />  1 cm = 0.39 inch = 0.1 mm, 1 inch = 2.54 cm = 0.254 mm. 
<br />  It supports Night Vision function. When you use it at night, there still needs a little bit light. 
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<br />Introduction: 
<br />- Item:60X60 
<br />- Magnification: 60 times 
<br />- Objective Diameter: 50mm 
<br />- Angle: 8.2 degree 
<br />- Minimum focusing distance: 5.0m 
<br />- Exit Pupil Diameter: 5.0mm 
<br />- Horizon: 17mm 
<br />- Relative brightness: 25.00 
<br />- Water fog: yes 
<br />- Size: 160x180mm (WxH) 
<br />- Distance: 5-3000m 
<br />- Night vision: Support 
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<br />Features: 
<br />Durable goods, High definition, especially for travel, field work, forestry, electricity, telecommunications, fire protection, border control, transportation and other construction units to use 
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<br />Accessories: 
<br />Backpack, Strap, Lens cap, Eyepiece cap, Lens cloth, Drying machine, Packaging boxes.