380 Stitched Leather and Fabric Watch Strap this strap has somewhat of an equestrian look to it. The 380 watch bands are available in black, beige, khaki and olive green. They are available in a variety of sizes. Select the size and colour that best suits your watch. Lug/Buckle Measurements: 18mm/16mm, 20mm/18mm, 22mm/20mm.