Beileshi 7x50 Binocular Sports Military Optics Scope Waterproof Shockproof Binocular Telescope Fulfilled by Amazon warehouse. Waterproof, shockproof binocular with 7x magnification and 50mm objective lens BAK-4 prisms, fully multicoated optical surfaces, and 23mm of long eye relief High contrast optics provide bright, sharply contoured images with natural color definition for outstanding viewing quality suitable for both beginners and professionals Sports-auto Focus System lets you Focus each Eyepiece to your vision once, then keeps images Razor sharp from 20 yards to Infinity. No more chasing Focus on moving objects Measures 7.9 x 4.1 x 5.9 inches (W x H x D) and weighs 2.76 pound