This compact, light-weight precision compass is designed for accurate navigation. Why carry a compass? Even with a GPS, a compass and map remains an essential tool for backpackers, campers and outdoor enthusiasts. If your batteries run out or you lose a signal, the GPS becomes a big paperweight but will not help you get home. Basic navigation skills with a compass and map can save your life. Why buy this compass? Not all compasses are created equal. This compass has several features that set it apart from the pack. 1) The needle housing id liquid filled to steady the needle, making more precise reading. 2) Rotating bezel ring with degree marks from 0-360 degrees in 1 degree interval. 3) The sighting mirror improved your ability to make more precise readings. When the mirror is partially open, you can sight through a notch at the top while simultaneously view you bearing and sight on a distant landmark. The mirror can also be an emergency signal mirror. 4) The base plate includes several tools including map scales for 1:50,000 and 1:25,000, 5) both millimeter and inch rulers, 6) and a magnifying lens. 7) The lanyard is perfect for carrying the compass. 7) The fold over protective both houses the mirror and protects the compass from damage. 8) Easy to read markings makes this a perfect choice for poor visibility. We back this compass with a life-time warranty.