AUTOMATIC CALIBRE 8210: Self-winding mechanical movement powered by wrist motion alone; reliable mechanical precision with a satisfying 40-hour power reserve EXHIBITION CASE BACK: See-through case back reveals the automatic movement in action; compelling feature for watch enthusiasts who appreciate mechanical craftsmanship GREEN DIAL + STEEL BRACELET: Contemporary green dial paired with a polished and brushed stainless steel bracelet; modern sport-dress aesthetic with wide appeal 38.5 MM COMFORTABLE SIZE: Well-balanced 38.5 mm diameter sits comfortably on most wrists; combines classic proportions with contemporary styling 10-BAR WATER RESISTANCE: Suitable for swimming and water sports; screwed case back provides enhanced sealing for active conditions