Citizen Men's Promaster Navihawk A-T Eco-Drive Pilot Watch, Atomic Timekeeping, Chronograph, Power Reserve Indicator, Luminous Hands and Markers, Anti-Reflective Crystal About this item Material Stainless-steel About this item Modern, pilot-inspired Promaster timepieces equipped for professional use to discover the world from high above. Synchronized Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities, Perpetual Calendar, Dual Time (Second Time Zone), 2 Alarms, 99-Minute Countdown Timer, Digital Backlight Display, Power Reserve Indicator Silver-Tone Stainless Steel Anti-Reflective Mineral Crystal 200 Meters Water Resistant Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery