The phosphorescent lensatic compass has been used as an economical alternative to the tritium model for decades. It is the same compass Cammenga has been supplying to the US military except that the self-luminous tritium has been replaced with phosphorescent paint. Features of this most rugged and accurate compass are: Luminosity: phosphorescent Jewel bearing: sapphire Rotating Bezel: bi-directional Climate capacity: -50 to+150 degrees F. Frame Materials: cast aluminum Lanyard: Included Waterproof: yes Carrying Pouch: LC-1 pouch with belt clip Condition: new Expected luminous life: 1-2 hours after brief exposure to light Accuracy: per MIL-PRF-10436N Dial readings: degrees and mils. Casting: aluminum Damping process: induction (no liquid required) Color, body: olive drab Color, pouch: olive drab.