Seiko Premier Kinetic Perpetual Calendar セイコー　キネティック パーペチュアルカレンダー This model features a Kinetic movement, which is an automatic generating system. The crystal is sapphire glass, so no scratches are visible. There are some scratches on the case, but they have been lightly polished, making them less noticeable. Please check the photos. Time and date adjustments can be made. The strap is genuine Seiko leather. It doesn't show much wear and tear and should still be usable for a long time. The secondary battery has been replaced. It should last for about 10 more years. A SEIKO Kinetic Perpetual watch with a silver and black combination, featuring calendar and chronograph functions. - Brand: SEIKO - Model: Kinetic Perpetual - Color: Silver/Black - Functions: Calendar display, Chronograph - Size: Case diameter approximately 42mm - Material: Stainless steel case, leather strap Thank you for viewing.