Specifications Quartz movement (battery powered/Seiko movement), water resistant to 5 ATM, small seconds, date display, SR920SW battery Size approx. 36mm x 36mm x 36mm x 11mm (excluding the lugs and the crown) Around the wrist: approx. 20cm~14.5cm Material Case: 316L Stainless Steel Belt: Italian Leather --Since the leather belt is made of natural leather, there will be subtle differences in the color of the belt during the tanning process, which is a characteristic of natural leather. This is a characteristic of natural leather. We hope you will enjoy the subtle differences in color as well as the individuality of the product.