The AMST3003 chronograph is a fully functional and stylish watch. As a chronograph, it has additional timing functions that can accurately measure the time that has passed and provide stopwatch and timer functions. Made of high-quality materials, it has the characteristics of being sturdy and durable. It typically features a stainless steel case and strap, providing additional protection and durability for the watch. In addition, it is often equipped with a scratch resistant sapphire glass dial, providing better scratch resistance and clarity. There may be other functions on this external disk, such as date display, 24-hour indication, timed alarm, etc. It is a fully functional, durable, and attractive watch.