Superex Wide-Angle 10X40 Zoomable Monocular Super High Power HD Optics Binocular with Case & Cover WIDE VIEW Monocular - 10x magnification with 40mm lens, bring you a closer ,clearer and brighter view. Easily, quickly and naturally capture the most elusive wildlife in a flash with our advanced. (About the zoom, 35x50 is the naming method in this industry, but the real zoom is 10x40) Built in lens dust cover and a eyepiece cover can prevent lens from dust and make sure you see everything in a clear detail. High transmittance: All-Optical FMC multi-layer broadband green film coated with bak4 prisms. Our monocular has the average light transmittance of more than 99%. Two way to focus: This product has dual focus capability, perfect for use in any circumstances. Ideal for travel, hunting, camping, hiking and other outdoor activities.