Sellita SW515-A

The SW515-A is an automatic chronograph movement manufactured by Sellita in Switzerland. It operates at 28,800 vibrations per hour with a power reserve of approximately 62 hours and contains 23 jewels. The movement features a cam-operated chronograph mechanism with day and date complications, both equipped with quickset functionality, and includes a hacking seconds feature. It uses a ball-bearing rotor for self-winding.