The Citizen Promaster Navihawk CA4664-60E is a pilot's chronograph featuring a 40mm silver-tone stainless steel case with sharp faceting and satin finishing. It includes a slide-rule scale on the bezel for flight calculations. The black dial, accented with red and white, ensures superior legibility. Protected by an anti-reflective sapphire crystal, the watch offers 200 meters of water resistance. Functions include a 1/5-second chronograph measuring up to 60 minutes, 12/24-hour time display, and a date indicator. Powered by Citizen's Eco-Drive technology, it harnesses light to eliminate the need for battery replacements. Caliber B620.