Hunting Birding Outdoor Binoculars

Common Features:
Waterproof with nitrogen filled
Long eye relief
High resolution
Shock resistant

Marine Binoculars

Common Features:
Waterproof with nitrogen filled
Long eye relief 
Shockproof design 
Compass and rangefinder reticle built in

Military Binoculars

Common Features:
Serious military standard
Waterproof and shockproof
Long eye relief 
Rangefinder reticle built in

Zoom Binoculars

Common Features:
Zoom models
Rubber armoured

Giant Binoculars

Common Features:
Large size
Astronomical or observation design

Full Size Binoculars

Common Features:
Porro prism style
Competitive price 

Compact Binoculars

Common Features:
Light weight
Competitive price

Opera Glasses

Common Features:
Light weight 
Lower power 

Tripod Adapter

Common Features:
Standard camera tripod thread