Arctic P9 Military Telescope Nano-Array Technology 300 Times Magnification, 4K 10-300x40mm Super Telephoto Zoom Low-Light Night Vision, Shockproof/Waterproof/Fogproof Telescope with Bracket Specification : Model: 10-300x40 Effective diameter of objective lens: about 30mm/1.3in Magnification: 7-17 times (corresponding to adjustment level 10X100) Eyepiece diameter: about 22mm/8.27in Exit pupil diameter: 4.2-1.7mm Exit pupil distance: 14-12mm Actual field of view: 230-110FT 1000YDS Actual field of view: 4.4-2.1 degrees The shortest focusing distance: 2.5m Size: about 173/128x43mm (stretching and shrinking) Weight: about 300g Prism: BAK4 prism Coating: FMC Colour: black Eye mask: rotating eye mask Waterproof: yes Tripod can be connected: yes Whether to connect the mobile phone: yes Used for: racing, beach, bird watching, boating/yachting, horse racing, outdoor activities, sports, drama, travel Material: optical glass Type: monocular Packing List: 1 x 10-300X40MM Monocular Telescope 1 x Tripod(Random Color) 1x Photo Clip