Soar with the best and brightest...the Chase-Durer Pilot Commander USA Edition alarm chronograph from Chase-Durer. Specially comissioned for graduates of the U.S. Air Force Weapons School. Outstanding watch offers expert craftsmanship and masculine, ultra-rugged design. Satin finished, steel case is presented on the high performance triple link bracelet in brushed steel. Unidirectional, ratcheted EB6 flight bezel with a black screened surface, coin edge detail in polished steel. Intricate black dial with silver colored subdials, tachometer outer ring, automatic date calendar and USAWS school logo. Highly legible hands and Arabic numeral markers feature a special Tritium/SPO system for continuous illumination. Chronograph features 1/5th second, 30-minute and alarm subdials. Scratch resistant mineral crystal. Water resistant to 100 meters (330 feet). Precise quartz movement. Case is 40mm in diameter and 11mm thick.