4K 10_300x40mm Portable Super Telephoto Zoom Monocular Telescope_ High Definition Telescope with Phone Clip_Black_

Description: Objective lens diameter: 30mm Magnification: 7-17 times (corresponding to adjustment level 10X100) Eyepiece diameter: 22mm Exit 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 Prism: BAK4 prism Coating: FMC 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, theater, travel Material: optical glass Type: Monocular Products include: 1x 10-300X40mm telescope monocular 1x phone holder