1.Main Function: This Product is a Portable Photoelectric Machine with Telescope and Laser Measurement Technology. It Has the Functions of Telescope, Ranging, Angle and Velocity Measurement. It Can Observe Objects from a Long Distance. It Can Also Measure the Direct Distance Between the Telescope and the Object, the Angle Between the Telescope and the Target Point, the Height and the Horizontal Distance. 2.Long Range and Accuracy: with Adjustable Eyepiece, It Allows People Who Are Nearsighted or Farsighted to See the Target Clearly Without Wearing Glasses. with Magnification and Incredible Accuracy within ±0.5 Yard, It Ensures You Always Get the Correct Measurements. 3.: Militaryquality Waterproof, Dustproof, Dropproof, and Pressureresistant, Comfortable to Feel, Powersaving and Durable, Accurate Measurement of Second Speed Measurement, Convenient Operation. 4.Multi Function Hunting Rangefinder: Laser Range Finder for Hunting Sports, Archery, Shooting, and Golfing with Distance Measurer, Continuous Scan Mode, Golf Pin Flaglock, Speed, and Angle Functions.