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: 10-300x40Effective diameter of objective lens: about 30mm/1.3inMagnification: 7-17 times (corresponding to adjustment level 10X100)Eyepiece diameter: about 22mm/8.27inExit pupil diameter: 4.2-1.7mmExit pupil distance: 14-12mmActual field of view: 230-110FT 1000YDSActual field of view: 4.4-2.1 degreesThe shortest focusing distance: 2.5mSize: about 173/128 x 43mm (stretching and shrinking)Weight: about 300gPrism: BAK4 prismCoating: FMCEye mask: rotating eye maskWaterproof: yesTripod can be connected: yesWhether to connect the mobile phone: yesUsed for: racing, beach, bird watching, boating/yachting, horse racing, outdoor activities, sports, drama, travelType: monocularColour: BlackMaterial: ABS plastic steel + BAK-4Package Contents:1 x Monocularwith tripod and mobile phone holder setOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.