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 bezel provides additional flight utility. A triple-link stainless steel bracelet secures the timepiece to the wrist. On the dial, a silver-tone 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.Case: Stainless Steel 40mmDial: Silver-ToneBracelet: Stainless Steel Fold Over Clasp with Hidden Push Buttons Movement Technology: Eco-Drive. Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries.Crystal: Anti-Reflective Sapphire Crystal .Impact and shatter resistant - anti-reflective coating deflects light1/5 Second Chronograph Measures up to 60 Minutes12/24 Hour TimeWR200/20Bar/666ft [Swimming, Showering & Snorkeling]Style Number: CA4660-61A