This is a Fujiya extension bracelet. It's a used bracelet. I haven't used it. There are scratches, marks, and looseness on the main body. The bracelet is loose, conforming to the shape of the wrist. It has been cleaned, but I don't think all the dirt has been removed. The bracelet length is free (approximately 14.5mm at present), and the straight lug width is approximately 17mm to approximately 21mm. Spring bars are not included.