324 Waterproof Leather Watch Strap a classic look for any watch. This stitched leather watch band is available in black or brown and in a variety of sizes. The black watch strap has white stitching, and the brown watch strap has brown stitching. Select the size and colour that best suits your watch. Lug/Buckle Measurements: 12mm/10mm, 14mm/10mm, 16mm/14mm, 18mm/16mm, 20mm/16mm, 22mm/20mm.