Magification: 12x

Objective diametre: 50mm

Eyepiece diameter 18MM

Eye Relief: 12.8mm

Exit Pupil: 3.0mm

Field of  degree: 4.9°

Coating type: fully-multi coated

Focusing system:Cent.

Near Focus:5m

Waterproof:water-resist, no nitrogen inside

weight：750g

Size:135*180*65mm ( added 1USD Phone adaptor ,  and USD 0.5 holder  for option )