Men's Self Winding Watch (Waterproof)With green dial, 41 mm gold and silver tone case, practical luminous hands and date display, classic design shows your charm. This mechanical watch can be worn for all types of occasions, from formal to just everyday casual activities . It's no doubt that you're going to be wrapped in luxury and compliments. Enlarged date window at 3 o'clock, luminous hands and hour markers for easy reading at any time. Classic unidirectional stainless steel bezel with top bezel. The polished stainless steel bracelet features a butterfly clasp for easy wearing and adjustment. Mechanical watch is powered by a precise automatic movement that provides a longer lifespan. The force is automatically generated by the movement of the arm. Batteries are no longer required. (An automatic watch needs to be worn for 8~12 hours a day to have sufficient power reserve. When the battery is low or when you wear it for the first time, please turn the crown clockwise 30-40 times.)