The Steiner Nighthunter binocular delivers over 96% light transmission due to the proprietary Diamond Night lens coating and oversized objective lenses. Featuring Sports-Auto-Focus system, these binoculars eliminate the need to constantly refocus. Once dialed in to your individual vision, the image stays razor-sharp from 20 meters to infinity. The Nighthunter is waterproof up to 5 meters, nitrogen-filled to prevent fogging and built with rugged NBR rubber armoring to withstand the harshest field conditions. Contoured ErgoFlex eyecups block out peripheral light and glare, ensuring a crystal-clear image and comfortable glassing. With a wide 135-meter field of view, 7mm exit pupil. Includes lens covers, rain guard, cleaning cloth, shoulder and neck strap, case.