1.High Contrast and Resolution Images: The optics technology, the HD monocular telescope equipped with BAK-4 prism and fully muti-coated lens, guarantee superior light transmission and brightness and the light transmittance reaches up to 99.5%. Our monocular has low-light-level capabilities, it could help you see things in low light (can't see anything in complete darkness), providing you with an amazing viewing experience. 2.Binoculars for adults, high power binoculars for bird watching, waterproof binoculars for adults, high powered binoculars for bird watching, compact binoculars for adults, binoculars for . 3. Monocular: This HD waterproof, fog-proof, dust-proof, shockproof monocular, with a built-in lens dust cover and o-ring sealed optics, can prevent the lens from dust/moisture/debris, ensuring a reliable waterproof function, suitable for most weather and environments (note: it can not be used in heavy rain for a long time or soaked in water). 4.Compact Roof Prism 10x22 Monocular: 10X power magnification and a large field of view, specially designed for outdoor activities such as climbing, hiking, driving, watching wildlife and scenery. This power can also be used for watching large stage plays, vocal concerts, football games, etc.