Technical sheet
Tudor’s Manufacture Calibre: 70 hours, silicon hairspring, balance held at both ends.
Features
Going train
| Arbor | Wheel | Pinion | True speed |
|---|---|---|---|
| Mainspring barrel | 84 | — | 1 rev / 7 hours |
| Center wheel | 80 | 12 | 1 rev / hour |
| Third wheel | 75 | 10 | 8 rev / hour |
| Fourth (seconds) wheel | 84 | 10 | 1 rev / minute |
| Escape wheel | 20 | 7 | 12 rev / minute |
Disclaimer
This is an approximation of the Tudor MT5602 layout from public drawings and photographs, not a manufacturer-accurate replica. The bidirectional rotor system with an openworked monobloc tungsten rotor, 28,800 vph (4 Hz), 25 jewels, about 70 hours, Ø 31.8 mm, 6.5 mm height, stop-seconds, the variable-inertia balance with a silicon hairspring, the traversing balance bridge with two-point fixing and COSC certification are published Tudor figures. Tudor calls it an in-house Manufacture Calibre; Caliber Corner and watch-winder.app say it is made by Kenissi, in which Tudor holds a stake. Tudor does not name the escapement type, so none is claimed; the builder draws a generic escape wheel and pallet fork. Tooth counts, the barrel position, the train layout, the seconds drive and the bridge outlines are an approximation; the tooth counts make the fourth wheel turn once a minute and the escape wheel match 28,800 vph. Parts are drawn larger than life for legibility. The escapement motion is a kinematic model, not a physics simulation.
Sources