WATERPROOF AND SHOCKPROOF FOR ROUGH USE - The base and cover are constructed with metal for years of durable using. Suitable for motoring, boating, camping, mountaineering, exploring, hunting, and other outdoor activities. EASY AND ACCURATE READINGS - The floating compass dial has a 360 degrees scale with liquid-filled capsule for stable operation. Featured with a level bubble to improve accuracy, the easy to see sighting window with reticle makes it easy to aim and read. TAKING BEARINGS EASILY - Build with an optical eyepiece for sighting bearings easily, with azimuth 360-degree and reversed 360-degree scale, you can take bearings from you to the objects or take reverse bearings from the object to you all quick and easy. ALLOW FOR CLEAR READING AT NIGHT - When exposed to enough light, the north arrow and display light up in the dark with fluorescent light, allowing you to see the reading if it is pitch black. MORE FEATURES - A conversion chart for angle, gradient, and distance appear on the back of the compass, and a rotating bezel ring allows you to lock in your bearing so you know you are heading in the right direction.