STEINER Navigator Pro 7x50 Binoculars w/ Compass (7155)

7x magnification is the marine standard, with a wide, stable image for tracking other boats, buoys and bridge numbers even in rough water; High contrast optics provide bright, sharply contoured images with natural color definition for outstanding viewing quality suitable for both beginners and professionals; Floating Prism System uses flexible silicone lens mount to absorb severe shock, impact and abuse without damage; Sports-Auto Focus System lets you focus each eyepiece to your vision once, then keeps images razor sharp from 20 yards to infinity; Makrolon housing is durable polycarbonate with NBR Long Life rubber armoring, creating a lightweight, rugged chassis that withstands 11 Gs of impact; N2 injection system seals 14-psi pressurized dry nitrogen into the optic, for fogproof clarity in any condition - from artic cold to desert heat