Binger CB750 7X50 Porro Prism Wide Angle Binoculars BK 7 Prism Fully Coated Optics High Definition Promotion Bird Watching Astronomical Viewing Hiking Outdoor Sports Aluminum alloy body for durable use High quality optical glass for maximum light transmission and crystal Large focus wheel for fast focus 7x powers excellent for hand-held watching 50mm objective diameter for maximum light transmission Green anti slip rubber for firm grip 1 year limited warranty