With advanced technology paired with an incredibly bold look, the latest Promaster Air Navihawk reaches a higher altitude in style. The watch's silver-tone stainless steel case measures 40mm in diameter, wearing boldly with its sharp faceting and satin finishing, while a slide-rule scale on the dark gray bezel provides additional flight utility. A triple-link stainless steel bracelet secures the timepiece to the wrist. On the dial, a khaki green colorway with red, black, and white accents adds to the watch's superior legibility, while a sapphire crystal and 200m of water resistance protect it all. Functions include a 1/5 second chronograph measuring up to 60 minutes, 12/24 hour time displays, and a date indicator, all powered by our Eco-Drive technology – sustainably powered by light and never needing a battery. Caliber B620. Specifications - Model: Citizen CA4664-60W - Gender: Men's - Collection: Promaster Sky / Pilot Chronograph - Movement: Eco-Drive (Caliber B620) – light-powered, no battery required - Power Reserve: Up to 9 months on full charge - Display: Analog, chronograph with 3 subdials - Case Material: Stainless steel - Case Diameter: 40 mm - Case Thickness: 13.2 mm - Dial Color: Glossy green - Crystal: Anti-reflective sapphire glass - Bracelet: Stainless steel - Clasp Type: Fold-over clasp with push button - Water Resistance: 200 meters / 20 BAR –suitable for diving - Functions: - Chronograph (60-minute) - 24-hour time - Date display - Slide rule bezel Item # CA4664-60W