Golf Laser Rangefinder Mini Golf Slope Sport Laser Distance Meter Rangefinder Outdoor Mini Laser Ranging Telescope PF230 for Hunting.   Features: One-key measurement, fast display the measuring data.  Mini and lightweight, easy for carrying out.  6X focus optical viewing system features HD lens, offering bright and clear view.  Flagpole scanning mode enable to measure and lock the difference of goal item.  Golf slop adjust mode quickly calculate the adjusted distance and angle for golf players.   Specifications: Model: PF230 Series;  Distance: 600m;  Power source: 3V, CR2 (repleacable);  Battery Use Time: Max, one year(Actual use time may vary due to different use frequency.);  Measurement: m, Yd;  Ranging error: about 0.5m;  Laser wavelength: 905nm;  View Filed: 7°;  Telescope lens: 6X;  Objective lens: 22mm;  Eyepiece hole diameter: about 16mm;  Exit pupil diameter: 3.7mm;  Diopter: 5D;  Diopter adjustment: Objective lens adjustment;  Operation Temperature: 0-40 Deg.C;  Features: Golf ballistic compensation function, Flagpole lock function, Continuous ranging function;  LCD Monitor: LCD;  Product Size: Approx. 11*6.5*3.8cm;  Product Weight: Approx. 164g;  Package Size: Approx. 15*9*6cm;  Package Weight: 400g;   Package List: 1 * Laser Rangefinder;  1 * Storage Bag;  1 * CR2 Battery (Tear down the insulation sheet on the battery before use);  1 * English Manual