Specification: Item Type: Rangefinder for Golf Material: plastic Product size: approx. 9.5 cm. Battery type: 2 x CR2032 (supplied with supporting battery) Battery model: 3V Battery capacity: 210 mAh Lens: approx. 28mm/1.1 inch Eyepiece: approx. 16 mm. 28 Magnification: 7x Long test distance: 930 yards Viewing angle: 7.8° Purpose: Range finder for golf Weight: about 130g Package list: 1 * Rangefinder 2 x button battery 1 x storage bag 1 x hanging line 1 x wipe 1 * User Manual Note: 1) The displayed distance matches the entered altitude unit.2) The power will turn off automatically 60 seconds after the operation.3) Caution! Please do not use this product to watch the sun with your eyes, as it may cause eye damage. Features Material: High-quality optical components with integrated digital distance-measuring technology. Two modes of operation, green mode and normal mode. Green Mode: Designed for golfers, it can easily measure the distance from your stance to the cup. General Mode: Can be used in other situations. First enter the height of the desired target. Then the 7x digital golf rangefinder calculates the distance between you and the target. Carbuncle Coated Optical Lens: With anti-ultraviolet, glare and anti-scratch functions. Align the digital distance sign with the pin, press the button and the distance in yards will automatically be displayed. Function: This is a golf observation instrument that uses optical and digital technology to measure distances. This is a distance test device. There is no radiation of energy in any form and there is no harm or damage to the human body during the activity