325 Stitched Calf Skin Watch Strap a classic look for any watch. This flat, stitched watch straps is genuine calf skin, which makes it super soft and comfortable to wear. This strap is available in both black and brown. The black strap is finished with black stitching, while the brown strap is finished with brown stitching. Select the size and colour that best suits your watch. Lug/Buckle Measurements: 24mm/24mm, 32mm/30mm, 34mm/32mm.