With advanced technology and an incredibly bold look, this promaster air navihawk from citizen reaches a higher altitude in style. 40mm faceted and satin-finished stainless steel case with a slide-rule scale bezel (for additional flight utility) and sapphire crystal khaki green chrono dial with red, black, and white accents for superior legibility and date display powered by eco-drive technology, so it never needs a battery three-link stainless steel bracelet; push-button fold-over clasp water-resistant to 200 meters caliber b620