Dimensions: 3.25" x 2.25" x 1.25". Essentially the same model supplied to the U. S. Military except this version employs a phosphorescent paint for lightless visibility instead of self-luminous Tritium. Features shockproof, damage-resistant design. Waterproof to considerable depths. Sandproof for extra durability. Accuracy +/- 40 mils. Performs flawlessly in temperatures ranging from -50F to 150F. Uncompromised by temperature changes due to its non-liquid filled needle housing. Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. Includes olive drab cord lanyard, and belt clip. OD green nylon pouch. Aluminum construction.