Product Magnification: 8XObjective lens diameter: 21mmField of view: 128m / 1000mPupillary distance: 52-74cmPrism Type: BAK 4， 100% of the reflected light can make more clear and bright imageLens Coating: Composite CoatingMaterial: High quality rubber， non-slip hand wheel center design， more comfortableWeight: 170gMini size: 11 x 8.5 x 4cmColors for choosing: Red/ Blue/ GreenTelescope for Bird Watching， Watching Wildlife or SceneryBright and Clear Range of ViewCompact and Lightweight Lanyard Portable DesignGlimmer HD Day and Night Vision ScopeSteady ViewingRotating eyepiece focusing mode; multi-layer red broadband coating technology， high light transmittanceCan be used at night to watch the scene with lightVisual difference adjustment function