Sellita SW510-BH-C

The Sellita SW510-BH-C is a Swiss-made automatic chronograph movement with a cam-operated chronograph mechanism and two push-buttons. It operates at 28,800 vibrations per hour, contains 27 jewels, and offers a 62-hour power reserve delivered through a ball-bearing rotor. The movement includes hand-winding, quickset date, and hacking seconds features. It remains in production and serves as a base movement for various watch brands' chronograph models.