For birders, hikers, and sports fans who want to pull subjects in closer without stepping up in price, the ACTION 10x42 delivers reliable Nikon optics in a rugged, easy-to-handle package. The 42mm objectives gather ample light for bright, clear viewing, while multilayer coatings cut glare and deliver high-contrast, lifelike color at 10x magnification. BAK4 Porro prisms provide excellent depth perception and a bright, immersive image-and at 10x, distant birds, wildlife, and on-field action appear noticeably larger and more detailed than in the 8x42 model. The aluminum alloy body handles bumps and drops, with rubber armor adding grip and shock resistance in any conditions. At 16.1mm, eye relief is long enough for comfortable use with eyeglasses, and the central focus system keeps adjustments quick and smooth. 10x magnification with 42mm objectives for bright, detailed viewing at distance Multilayer-coated lenses reduce glare and deliver high-contrast, lifelike color BAK4 Porro prisms for excellent depth perception and a bright 3D image Central focus system for quick, smooth adjustments Long eye relief for comfortable use with or without eyeglasses Rubber-armored aluminum alloy body for secure grip and impact protection