Function:1. The larger the aperture, the brighter the image, from the same distance, the larger the aperture, the better the brightness of the field of view.2. The optical lens adopts high-definition blue coating, high-quality coating, higher light transmittance,3. Right eye lever type adjustment which is easy, convenient, precise and accurate, 20-180 times.4. Non-slip bean convex focus knob, focusing is easier, no slip left middle eye adjustment method, easy to use.5. There is a tripod connector at the bottom, and the connection to the mobile phone for taking photos and videos is more stable, which is good for observation at a fixed point under high magnification.Specification:Item Type: BinocularsPrism material: AK4Protective material: rubberColor: as shown in the pictureBinoculars Size: Approx. 24 x 20 cm / 9.4 x 7.9 inchWeight: approx. 1343g / 47.4ozModel: 20-180x100Structure: binocularsFunction type: telescope with zoomPurpose: civilian telescopeMagnification: 20-180XObjective lens diameter: 60mm / 2.4inEyepiece diameter: 18mm / 0.7 inchLens Coating: Multi-layer wideband blue FMC filmFocusing method: central right eyeConvenient distance: 20m ~ 1000mField of view (m / degree): 56M 1000M / 4.2 degreesPackage list:1 x binoculars 1 x user manual1 x bracket1 x cloth1 x hanging rope2 pairs x eyepiece cover1 x binoculars bag