Aoneky 10x 40 Compact Monocular Telescope - Big Eyepiece Dual Focus with Lens Dust Covers for Hunting Bird Watching, Black UNIQUE FEATURES - DUAL FOCUS- Eyepiece focus and Lens focus, make more clear and bright image, and you can observe objects near 6.6 feet, other telescopes do not have this feature DUAL GREEN FILM BROADBAND COATING TECHNOLOGY- Upgraded ultra-through multi-layer broadband green film, light transmission rate of 95% or more, make you see the scene more realistic GLIMMER NIGHT VISION - Can be used at night only NEED there is a LIGHT SOURCE Non-Slip Grip, Roof Prism Waterproof Fogproof, Bright and Clear Range of View, Compact and Lightweight LNON-SLIP GRIP - Roof Prism Waterproof Fogproof, Bright and Clear Range of View, Compact and Lightweight Lanyard Portable Design, Glimmer HD Day and Night Vision Scope, 10X Monocular Zoom To See Things 10X Closer, Steady Viewinganyard Portable Design, Glimmer HD Day and Night Vision Scope, 10X Monocular Zoom To See Things 10X Closer, Steady Viewing EASY TO TAKE - 5.8 x 2 x 1.7 inches, 10.2oz, It's light that easy to take Magnification: 10 X 40 Visual field: 95m/1000m (312 feet/1093yards) Exit pupil distance: 0.16in Prism Type: BAK 4, 100% of the reflected light can make more clear and bright image Field of view: 22