6645-00-066-4279 Manufactured in accordance with MIL-PRF-46374G, Type I, Class 4, this watch has 24-jewel mechanical movement. The stem-winding mechanism has a minimum 36-hour running time and is accurate to a minimum of 30 seconds a day. Stem for winding and setting time is located at the 3 o’clock position; movement stops when the stem is pulled out. This watch features a high-impact fiber shell with a waterproof and dust-proof case. Black military face features both 12-and 24-hour timing with white numerals and a sweep second hand. Luminous hands and hour markings are powered by tritium tubes. This Swiss-made watch comes with a black nylon mil-spec strap with buckle closure that adjusts to most wrist sizes. The strap is manufactured in accordance with MIL-S-46383B, Type II. Product carries a two-year guarantee.