Helios Nitrosport 10x42 Binoculars: Helios Nitrosport 10 x 42 Binocular is stylish open hinge design which is ideal for bird watching and general applications and can be handled easily. The feature of fully multi-coated on all glass to air surfaces gather more light and deliver bright, crisp images with a small body size. The phase-coated and silver- coated roof prisms provide high resolution and contrast to assure the maximum light transmission, true-to-life images. It is purged with nitrogen to resist internal fogging and also water proof to perform well in all weather conditions. With its 10x magnification, it allows you to watch the scene closely and clearly and the large size 42mm objective lenses increases light transmission and offers viewing even in low light conditions. The twist-up eyecups position your eyes at the perfect distance from the ocular lenses for a full field of view. For long observation it can be mounted on tripod with the help of optional adapter especially very ideal for birding and general observation. The long 16mm eye relief design offered viewer to see entire 6.1 degrees field of view clearly and effortlessly even for with and without glasses users. It had a soft carrying case, eyepiece rain guard and neck strap to keep the binocular safe during long traveling without any worry.