4K 10-300X40MM Monocular Telescope Zoom Monocular Pocket Telescope for Smartphone Take Picture

   Bullet Points:    1,Tripod Design: Anti-shake system, special tripod 3D gyroscope, very stable during multiple zooms.    2,Clearer Scenes: BAK4 prism lens, 30 times closer and large field of view, clearer and more colorful scenes. Excellent light transmittance and brightness, brighter and clearer images.    3,Night Vision Function: Built-in night vision function, you can see when there is light at night. Turn on the auto focus and blur the background, you can focus on people or objects need to be observed.    4,Moisture-proof and Waterproof: The Nitrogen-filled waterproof and O-ring optical components can prevent moisture, dust and debris, and ensure service life. The bracket better fits your phone, allowing you to take beautiful photos and adapt to harsh environments.    5,Suitable Group: Suitable for outdoor sports enthusiasts and wilderness explorers, an essential equipment for bird watching, wildlife, hunting, hiking, mountain climbing, camping and travel.    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