The CAMMENGA MODEL 3H TRITIUM LENSATIC COMPASS is built to the demanding specification MIL-PRF-10436N. Battle tested through rigorous shock, water, sand proof, and functional from -50o F to +150o F. Seven Tritium Micro Lights allow for navigation in low-light conditions, without the need for a flashlight or any other light source. Tritium Micro Lights remain luminous for over twelve years, maintenance-free. Equipped with a magnifying lens, sight wire, and dial graduations in both degrees and mils to ensure accurate readings. The Copper Induction Damping System slow the rotation of the magnet without the use of liquids. Built to last with an aluminum frame and waterproof housing. The CAMMENGA COMPASS is depended on by fighting forces, government agencies, and adventurous outdoor enthusiasts around the world. Features: Luminosity: Tritium Jewel Bearing: Sapphire Rotating Bezel: Bi-Directional Climate Capacity: -50 F to +150 F Frame Materials: Cast Aluminum Waterproof: Yes Expected Luminous Life: 10 Years Accuracy: +/- 0002 mils Dial Readings: Degrees & mils Casting: Aluminum Damping Process: Induction Carrying Pouch: LC-1 w/Belt Clip Lanyard: Included (No Liquid Req.) Colors (Body): Olive Drab, Black Warranty: Included, 1 Year NSN: 6605-01-196-6971