WHAT'S INCLUDED COOLSHOT 20i GIII Rangefinder Case Lithium Battery (CR2) FEATURES "LOCKED ON QUAKE" function that notifies user via vibration that the distance to the flagstick has been measured. When measuring overlapping subjects such as a flagstick with trees in the background, the distance to the closest subject is displayed with vibration. Two measurement display modes are employed. Golf mode (slope adjusted distance and actual distance) which displays a guide distance of how far to hit the ball, and Actual Distance mode which can be used for official golf competitions. One press of the MODE button switches between the two measurement display modes. Compact and lightweight body - Approximately 130g or 4.6oz, allowing the user to easily carry and slip into their pocket during a round of golf without having a bulky or heavy unit hindering their swing. Single or continuous measurement mode with up to 8 seconds on continuous measurement. High quality 6x monocular with multilayer coating for bright clear images. Long eye relief design affords eyeglass wearers easy viewing JIS/IEC rainproof protection class 4 (IPX4) equivalent (under our testing conditions)