Sellita SW500-1

The Sellita SW500-1 is an automatic chronograph and an in-house alternative to the ETA 7750. It beats at 28,800 vph with a 48-hour power reserve and measures 30mm in diameter. The movement features a distinctive 12-6-9 subdial layout with a chronograph counter at 9, minute counter at 6, and retrograde 1/10-second display at 12, with a day-date window at 3. It remains in production and is used by various brands seeking a reliable chronograph caliber.