Specifications:

Magnification	8x
Caliber	42
Prism System	Porro
Prism Glass	BAK4
Focus System	Center
Field Of View(ft/1000yds)	429
Close Focus Distance	6
Exit Pupil	5.25
Eye Relief	19
Eyecup Type	Twist-up
Water proof/Fog proof	Yes
Tripod Adpater	Yes
Coating	FMC-Green
Nitrogen filled	Yes

Features:

Large 22mm ocular lens for comfortable viewing
Durable and Protective, Rubber-armored
Fully multicoated glass lenses deliver the ultimate brightness and resolution
BaK-4 prisms offer the clear, bright and crisp images 
Long eye relief for eyeglasses wearers
Smooth Central Focus Knob for quick viewing
Nitrogen filled and O-ring sealed for Waterproof/Fogproof