(Monocular only) 4K 10-300X40mm Super Telephoto Zoom Monocular Telescope with BAK4 Prism LensThe product is shipped based on the color or size of the main image of the product page.Type:Monocular onlyNote: The product does not include a mobile phone Description:Specifications: (10 times-300 times, 40 is the exit pupil diameter)Magnification: 10-300times (corresponding to adjustment level 10-300)Eyepiece diameter: 22mmExit pupil diameter: 4.2-1.7mmEye relief: 14-12mmField of view: 230-110FT @ 1000YDSField of view: 4.4-2.1 degreesMinimum focusing distance: 2.5mSize: 173/128*43mm (stretching and shrinking)Weight: 300gPrism: BAK4 prismCoating: FMCColour: BlackEye mask: rotating eye maskWaterproof: yesTripod can be connected: YesConnected phone: yesUsed for: racing, beach, bird watching, boating/yachting, horse racing, hunting, outdoor activities, sports, theater, travelMaterial: optical glassType: MonocularPACKAGE INCLUDE:(Optional)1x Monocular Telescope OnlyOr1x Telescope with TripodClipThe product does not have a mobile phone, the list is as aboveNotice:1.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.2. Please forgive 0.5cm-3cm measuring deviation due to manual measurement.