Product information: Product name: Mechanical watches Buckle material: stainless steel Strap material: leather Dial shape: round Case material: stainless steel Movement type: mechanical Dial diameter: 40mm Thickness: 8.6 mm Water resistance: 50m Style: fashion Special features: calendar, see-through window, day display, month display Color: all black and blue, all black and black, all gold and gold, between gold and blue, between gold and silver, natural blue, natural black, natural silver, Pack Womens Jewlery, Business Calendar, Waterproof Watch, Vintage Models, Men's Watches, Mechanical Watch, Gold And Silver, All Black, Style Fashion