The JDD is powered by a Swiss-made ETA 2836 automatic movement with Incabloc™ shock absorber and features 25 jewels. It also boasts a bilingual day/date window that displays in both English and French, making it ideal for use in multinational military operations.

This military watch features Tritium gas tubes and MaraGlo luminous technology for low-light visibility, ensuring that it can be easily read in any situation. The sapphire crystal is scratch-resistant and protects the watch face from damage.

The screw-in crown and uni-directional bezel make the JDD water-resistant up to 30 ATM, allowing it to withstand submersion in water for extended periods of time. The bezel also has a 60-minute scale, which can be used to time intervals during missions or operations.

With a lug width of 22mm and a case thickness of 18mm, the JDD is a substantial and robust watch that is sure to withstand the demands of military use. Overall, the Jumbo Day/Date Automatic is a reliable and functional military watch that is designed to meet the needs of military personnel in the field.