Eyeskey 8X25 Portable Monocular Binoculars Large-field Low-light Night Vision Telescope Model:8X25 Feature type:Normal telescope Use:Civil Telescope Instrument magnification:8 times 1. Specifications: Body material: aluminum alloy How to use: Handheld Magnification type: Fixed magnification Objective lens diameter: 25mm Eyepiece diameter: 17mm Field of view: 7.1’124.6m Outlet diameter: 3.1mm Exit distance: 14.5mm Near focal length: 5m Product size: 115 x 48 x 43mm Net weight: 160g 2. Applicable scenes: hiking, watching scenery, watching games, watching concerts, sailing, etc. 3. Both the eyepiece and the objective lens are made of FMC HD transparent green film, which has better light passing and brighter and clearer imaging. 4. BAK4 prism coating, phase film, high anti-media film, anti-reflection film, sharper imaging in low light environment 5. Nitrogen-filled waterproof, good sealing, fog and dust can not enter, outdoor travel, rain, wet, sand and other harsh environments, can be used normally