The Celestron Oceana 7x50 binocular is a waterproof binocular designed for marine and land based observations.This feature-packed model includes an illuminated compass for direction finding, reticle for distance measurement. Maximum optical performance is appreciated with the BaK-4 prisms and fully multi-coated optics for ultra sharp images with high contrast and resolution. It has a large 50 mm objective lens to offer maximum image brightness even in low light conditions, like dusk and dawn.Features- 7x50 Porro- Individual Focus- Fully Multi-Coated for maximum resolution and high contrast views- Waterproof and Fogproof with nitrogen purging for all weather protection- Rubber covered for protection and a firm grip- Illuminated Compass built-in for direction location- Reticle built-in for determining distance and size of objects- Calculator Dial for quick distance measurement- Aluminum Body- Olive Drab for Military/Camouflage color scheme- Tripod adapter fitting for tripod mounting for increased stability- Soft Carrying Case for protecting the binoculars- Limited Lifetime WarrantySpecificationsMagnification: 7xObjective Lens Diameter: 50mm (1.97\")Angular Field of View: 7.5