Description: Used for: racing, beach, bird watching, boating/yachting, horse racing, hunting, outdoor activities, sports, theater, travel Material: optical glass Type: Monocular Objective lens diameter:25mm ,Magnification: 10x300 ,Eyepiece diameter: 12mm ,Exit pupil diameter: 4.2-1.7mm ,Eye relief: 14-12mm Field of view: 0.5-3000m ,Minimum focusing distance: 2.5m Specification: Objective lens diameter:25mm Magnification: 10x300 Eyepiece diameter: 12mm Exit pupil diameter: 4.2-1.7mm Eye relief: 14-12mm Field of view: 0.5-3000m Minimum focusing distance: 2.5m Size: 192/117x32mm (stretching and shrinking Weight: 118g 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 Package Includes: 1x Telescope set Note: Instructions: Step 1: The telescope is shortened to a shorter state, the initial state Step 2: Point the small dot above the eyepiece to the 10X position, or ten times Step 3: Slightly extend the stretch ring outward by about 1 cm to see clearly