SERIES 8 - NB6010-81ERedefining the power of a sport watch with infinite possibilities. Introducing the Citizen Series 8 mechanical collection of modern timepieces for a modern world. The sporty designs with high performance automatic movements make a powerful impression. Stand out in style with the refined, signature 831 mechanical watch that features a superior accuracy of 10 to +20 per day in a sleek, silver tone stainless case and bracelet in both hairline and mirror