Your Apple Watch gets a classic look with Apple Watch 40mm Modern Leather Watch Strap Black - Small. The strap is made of high-quality, smooth leather. This modern watch strap looks like it closes with a buckle, but it's actually a two-part magnetic clasp. You can easily adjust the closure to the right size, so it fits well. A layer of Vectran is applied on the inside of the strap, which provides more strength and enough stretch. This watch strap is suitable for the Apple Watch 40mm, which fits a wrist with a circumference between 135 and 150mm.This is an original Apple accessory.