Tudor T601

The T601 is an automatic movement manufactured by Tudor, introduced in 2020. It operates at 28,800 vibrations per hour with 25 or 26 jewels and features a ball bearing rotor with KIF and Incabloc shock protection. The movement is based on the ETA 2824-2 (also accepting Sellita SW200-1 variants) and includes a date complication. Tudor markets the T601 as having "chronometer performance" but does not place "Chronometer" on the dials, suggesting the use of a Premium grade Sellita or Top grade ETA that runs to COSC-like specifications without official certification. It powers most non-ceramic Tudor watches, including the 1926 in 36mm, 39mm, and 41mm sizes.