Golf or Hunting Rangefinder - Has 3 modes, usually a scan mode, this mode can be used to range all items within the application range (5-650 yards). Golf Mode, this mode is specially designed for golf, pin-seek(150 Yard), flag-lock(300 Yard), JOLT Technology, Slope Distance Correction. Speed mode, speed measurement range: 20-300km/h, this mode is very suitable for hunting or other outdoor sports.Brilliant Golf Mode - This latest GS03 golf rangefinder is equipped with the most advanced golf rangefinder technology. Pin-seeking and flag-lock technology let you know exactly how far to swing. When you lock onto a target, pin, flag, or anything else, JOLT technology vibrates to alert you and the data is right in front of your eyes. Clearly. At least but not last, very useful slope distance correction function, SDC function will help you swing in the correct distance. EASY TO USE - Fast and accurate measurement with 1 yard accuracy, one-touch meter and yard switching, button mode switching. Net weight only 184g, portable and compact mini size: 106 x 40 x 71mm (L x W x H), very convenient carrying strap and small waterproof bag for storage after use. Comes complete package: pouch, carrying strap, cleaning cloth, operating manual.