10-300 × 40 Barrel Telescope High Power High Definition Low Night Vision Continuous Variable Magnification Telescope Features: [Super telephoto lens monocular]: The telescope's anti-shake system and special tripod gyroscope make the telescope's field of view very stable when magnified multiple times. [Small night vision]: The built-in night vision function allows you to use it normally at night. Turn on the auto focus and blur the background function, brake you can focus on observing the person or that needs to be observed. [Lightweight and portable]: is made of titanium alloy, which has higher specific strength and weighs 1.1 pounds. When stowed, the length is 7.87 inches, and you can easily put it in a backpack or pocket when hunting, traveling or camping. [Waterproof, dusproof, shockproof design]: Nitrogen-filled and O-ring optical components can, and debris, and ensure the function of life. [Ideal for outdoor sports enthusiasts and wilderness explorers]: Hand-held equipment is equipment for bird watching, , hunting, hiking, climbing, camping, camping, surveillance and travel. Product detaila: detaila: lens diameter: 30mm Magnification: 7-17 times (corresponding to adjustment 10X100) Eyepiece diameter: 22mm pupil diameter: 4.2-1.7mm Eye relief: 14-12mm Field of view: 230-110FT 1000YDS Field of view: 4.4-2.1 degrees Minimum focusing distance: 2.5m Size: 173/128x43mm (stretching and shrinking) Weight: 300g : BAK4 Coating: Colour: Black Eye mask: rotating eye mask Waterproof: yes Tripod can be connected: Yes Connected phone: yes Used for: racing, beach, bird watching, boating/yachting, horse racing, hunting, outdoor activities, sports, , travel Material: optical glass Type: Monocular Products include: 1x 10-300X40mm telescope monocular