Certina 330 415

Certina

Founded in 1888 by Adolf and Alfred Kurth, Certina is a Swiss watch brand known for its robust and sporty timepieces, particularly those featuring its DS" (Double Security) concept for enhanced shock and water resistance. The brand has a strong association with motorsports and diving. Famous models include the DS Action Diver, DS Podium, and DS-2, all embodying durability and precision. Certina primarily uses reliable ETA movements, often with custom finishing or Powermatic 80 enhancements, ensuring excellent performance. Certina continues to offer high-quality, resilient watches for active lifestyles."

Ratchet

A ratchet is a toothed component used in the winding system of a mechanical watch, helping control the winding and release of mainspring power. It often works together with clicks, wheels, and springs to prevent unwanted reverse movement. Ratchets may be replaced when teeth are worn, broken, slipping, corroded, or causing problems with winding efficiency.