This is a Maruman watch strap with a 13mm lug width. It's a vintage Japanese-made strap, and the craftsmanship is excellent. While used, there's no noticeable stretching or looseness. There are minor scratches from use. Ultrasonic cleaning has been performed prior to listing, but please refrain from purchasing if you are looking for the quality of a new product. Thank you for your understanding. - Material: Stainless steel - Country of Manufacture: Japan - Manufacturer: Maruman - Width: 13mm lug width Thank you for viewing. Please feel free to ask any questions. Thank you. Color: Silver #WatchStrap #13mm