Feature: 1. High Accuracy: Our rangefinder has high accuracy, with a total measurement distance of 600m and an accuracy of ±5 yards, so that you have accurate values to refer to in every observation. 2. Slope Function: This rangefinder also has a slope function, which can calculate the slope for you and provide you with an accurate distance, so that your experience is enhanced when you are actually operating. 3. Diopter Adjustment Function: The rangefinder also has a diopter adjustment function, so you can set the rangefinder according to your actual eyesight, making it a great helper for you. 4. Easy to Use: Our rangefinder is small and light, very portable, you can carry it around whenever you need to use it. 5. Clear Observation: The rangefinder can do clear observation, 6 times optical magnification to assist you to be able to understand the data more clearly and intuitively, suitable for power engineering and ball game. Specification: Item Type: Rangefinder Material: ABS Battery: 3.7V Lithium ion battery x 1, battery capacity 750mAh (shipping with internal battery) Measuring Range: 5-600m Laser Wavelength: 905nm Charging Method: USB Accuracy Resolution: 0.1m Measurement Units: Yards (yd), meters (m) Height Measurement Function: Yes Velocimetry Function: Yes Magnification: 6X Eyepiece Aperture: Approx. 16mm/0.63in Objective Lens Aperture: Approx. 25mm/0.98in Pupil Diameter: Approx. 3.8mm/0.15in Waterproof Rating:IP54. Package List: 1 x Rangefinder1 x Storage Bag1 x Instruction Manual1 x Charging Cable1 x Belt Buckle1 x Lanyard1 x Eyeglass Cloth Note: Manual measurement. The specific size depends on the actual measurement.