Function: 1. Long Distance: This golf rangefinder supports a maximum distance of 450 meters, which allows you to easily obtain measurements and information on most objects. 2. Ergonomic design: This golf rangefinder has an ergonomic design for a comfortable grip, and this rangefinder is waterproof, dustproof and dropproof. 3. Easy measurement: the definition of the eyepiece can be adjusted freely, which is convenient for measuring distance, height, angle and speed. 4. Multiple Modes: This golf rangefinder provides continuous measure mode, fog mode, speed mode, golf mode. 5. High Accuracy: This golf range finder features highly accurate measurement, 6x magnification ensures accuracy within 1 meter. Specification: Item type: golf rangefinder Material: plastic cement Battery parameters: 2 x AAA batteries (battery not included) Measuring range: approx. 5-450 meters / 5.47-492.13 yards Mode: Continuous measuring mode, Fog mode, Speed mode, Golf mode Magnification: 6X Eyepiece size: Approx. 16 mm / 0.63 in (manual measurement, there may be a slight error) Operating temperature: -10 ~ 40 ℃ Weight: approx. 291g / 10.26oz Package List: 1 x Golf Range Finder (battery not included) 1 x Storage Box 1 x Lanyard 1 x Cleaning Cloth 1 x User Manual Start, enter the distance measurement mode, adjust the focus, select the mode and unit, and take the measurement.