Movement: Quartz, Battery-powered SEIKO Alba Aquagear Currently running. Calendar: Yes Reliable and robust diver. Bezel rotates. Leather is genuine leather, as indicated. Some wear and tear around the holes (please check the photos). Ladies' size, but can also be worn by men. Personally, it's a perfect fit. Lug width: 16mm The concho was made by processing a coin and then glued onto a pre-made band. Please purchase if you are satisfied with the photos. The battery is for operational confirmation. Please note that due to the nature of quartz watches, we cannot predict when the battery will die. We recommend using an SR battery for replacement. v-782