Specifications:

Magnification	10x
Caliber(mm)	50
Prism System	Roof
Prism Glass	BaK4
Focus System	Fixed
Field Of View(ft/1000yds)	366
Close Focus Distance(m)	3.5
Exit Pupil(mm)	5
Eye Relief(mm)	19
Eyecup Type	Twist-up
Water proof	Yes
Tripod Adapter	Yes
Coating	Multi-Coated

Features:

Lightweight, ergonomic design
Durable and Protective, Rubber-armored 
Long eye relief for eyeglasses wearers
Fixed focus,comfortable for quick viewing
50mm large objective lens
Multi-coated glass and Bak4 prisms deliver the ultimate brightness and resolution
Buld-in illuminated military reticle
Supply from professional optical brand "VISIONKING" directly,buy for confidence