Ueasy Waterproof 10x25 High Powered Lightweight Handheld Mini Monocular Bak-4 Fully Multi-coated Prism Outdoor Sports Telescope Black Parameters: Magnificationr: 10x, Optical lens Diameter:25mm, BaK-4 Prism, Fully Multi-coated imensions(in): 1.9(L)x1.5(W)x4.4(H);Handheld mini monocular, easy to carry Waterproof and Fogproof design: Barrels are filled with nitrogen gas to inhibit internal fogging. Fits for outdoor sports, vocal concert, athletic meeting and so on Suitable for both wearing glasses and not