Feature:1. The body is made of aluminum alloy frame, and the appearance is designed with skinlike lines, which is more comfortable and firmer.2. Equipped with a smartphone adapter and a tripod, the telescope is transmitted to the highdefinition mobile phone telephoto lens, compatible with all smart phones.3. The sturdy frame is coated with shockabsorbing and non-slip rubber armor to ensure that your monocular telescope can still provide you with the best performance under various temperature and weather conditions.4. The lowlight level night vision builtin design helps you see things clearly in low light or dim conditions.5. Large BAK4 prism and fully coated lens elements, light reflection and minimum distortion, better image brightness, contrast and quality.Specification:Item Type: Monocular TelescopeModel: 10-300x40 MonocularColor: BlackMaterial: Aluminum Alloy + Glass + RubberUses: outdoor distance measurement, object observationZoom: 10-300Objective Lens Diameter: Approx. 40mm / 1.6inEyepiece Diameter: Approx. 20mm / 0.8inField of view: 45.5-80.5M/1000MExit Pupil Diameter: Approx. 1.2-1.7mm / 0.05-0.07inExit Pupil Distance: Approx. 17-14mm / 0.67-0.55inPrism Category: BAK4Focusing Method: Stretch or RotateOptical Coating: FMC CoatingField of view: 2.4 x 10X/2.1 x 300XFocusing Method: Lens Body AdjustmentRecent Focus: 2.2.Package List:1 x Monocular Telescope1 x Tripod1 x Phone Eyepiece Holder1 x Cleaning Cloth1 x Manual 1 x Carrying Case1 x Lanyard