Roue de couronne Certina 28-10 avec noyau 420/423

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."

Wheel

Wheels are essential rotating components in a watch movement, used to transfer power, motion, and timing between different mechanisms. They appear throughout the gear train, winding system, setting system, calendar, chronograph, and automatic winding works. Wheels may be replaced when teeth, pivots, spokes, or friction surfaces are worn, bent, broken, corroded, or causing poor performance.