BARSKA AB13640 Cosmos 天文双目望远镜 (20x)

Focus System: Individual

Prism Type: Porro

Prism Glass: BAK-4

Magnification (Fixed): 20x

Close Focus (ft/m): 39.4/12

Eye Relief: 15.4mm

Objective Lens: 80mm

Exit Pupil: 4mm

Field of View (ft@1000yds/m@1000m): 157/52

Optical Coating: Multi-Coated

Waterproof: Yes

Fogproof: Yes (Nitrogen CO2)

Tripod Adaptable: Yes

Product Weight: 89.6 oz

Finish: Black Matte

Included Accessories: Premium Carrying Case and Lens Cloth