The Black Bay Chrono model seamlessly fuses TUDOR’s long history of crafting professional divers’ watches with a sports chronograph. This watch features contrasting sub-counters and a high-performance automatic Manufacture Calibre, with column-wheel construction and vertical clutch. Boasting a 70-hour power reserve and a silicon balance spring, the Manufacture MT5813 Chronograph Calibre is certified by the Official Swiss Chronometer Testing Institute (COSC), with its performance exceeding the standards set by this independent institute.
CASE: 41mm 316L stainless-steel case with polished and satin-brushed finishes
BEZEL: Fixed 316L stainless-steel bezel with black anodised aluminium insert and tachymetric scale with silver markings
WINDING CROWN: 316L stainless-steel screw-down winding crown with the TUDOR rose in relief. 316L stainless-steel screw-down pushers at 2 o'clock and 4 o'clock
DIAL: “Flamingo Blue” with black counters, domed. Date at 6 o'clock
CRYSTAL: Domed sapphire crystal
WATERPROOFNESS: Waterproof to 200m (660 ft)
BRACELET: 5-link 316L stainless-steel bracelet with polished and satin-brushed finishes, with TUDOR “T-fit” rapid adjustment clasp
MOVEMENT: Manufacture Calibre MT5813 with chronograph function. Self-winding mechanical chronograph movement with bidirectional rotor system
POWER RESERVE: Approximately 70 hours
PRECISION: Swiss chronometer officially certified by COSC. (Official Swiss Chronometer Testing Institute)
FUNCTIONS: Hours and minutes hands at the centre. Chronograph seconds at the centre. Chronograph 45-minute counter at 3 o'clock. Small seconds at 9 o'clock. Instantaneous date at 6 o'clock with rapid adjustment without non-correction range. Stop-seconds for precise time setting
OSCILLATOR: Variable inertia balance, micro-adjustment by screw. Non-magnetic silicon balance spring. Frequency: 28,800 beats/hour (4 Hz)
TOTAL DIAMETER: 30.4mm
THICKNESS: 7.23mm
JEWELS: 41 jewels
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