APLNJHA Professional 8-40X40 monocular Powerful Single Tube Telescope with high Zoom, Portable for Camping Binoculars HD

Technical data: prism system: Paul system magnification: 8-40 objective lens diameter: 40 mm eyepiece diameter: 21 mm lens coating: FMC broadband green film prism material: BAK4 Interpupillary Distance: 12.5-9mm Focusing Method: Focusing Lens Rotation Pupil Diameter: 3.1-1.5mm Tripod Interface: Support Video Camera Product Material: ABS Plastic Steel Material Product color: black Product size: 155 ? 50 mm Product weight: 210 g Environmental parameters :( Telescope best storage conditions) Humidity: 65% or less Tripod interface: Support Purpose: travel, outdoor sports, with the appearance when using.?A section close to the focal length of up to 0.5m, a close-up view of the development is beneficial.