Meet the endeavor chrono, a bold take on nautical-inspired style. This timepiece is powered by light—any light—with citizen's proprietary eco-drive technology and never needs a battery. White dial with chrono sub-dials 43. 0mm polished stainless steel case sapphire crystal rotating bezel battery rechargeable by light stainless steel bracelet; fold-over clasp water-resistant to 100 meters we are an authorized citizen dealer.