The band is made of stainless steel, good quality, does not rust. The curved line fits well with the wrist. With a very light weight Helps to be comfortable all day The lock is magnetic. Locks tightly, does not come off easily. The strap can be adjusted to fit all wrist sizes, just by attaching the magnetic lock to the desired size. The strap is easy to wear and remove from the case. And securely locked to the case The cable is quite long So it can be worn on people with large and small wrists