Tudor
Tudor MT5402
Swiss lever · introduced 2015
Beat rate
28,800 vph
Power reserve
70h
Jewels
26
Introduced
2015
Escapement
Swiss lever
Tudor's first fully in-house automatic, the MT5402 gave the brand independence from ETA for its core time-only references. Its 70-hour power reserve from twin barrels, free-sprung balance, and silicon hairspring put it above most supplier movements at the price. COSC certification is standard. It directly addresses the historical criticism that Tudor sold Rolex cases with commodity movements.
Specifications
Beats per hour
28,800
Jewels
26
Power reserve
70h
Diameter
26.0mm
Height
6.0mm
Escapement
Swiss lever
Introduced
2015
Finishing
Commercial
Service interval
8 years
Service cost tier
Mid-range
Known service issues
- No significant failure modes documented in its first 10 years of production; essentially Rolex-grade components at a fraction of the price
- Some early MT5402 examples (2015 to 2017) showed slightly higher positional variance than equivalent Rolex calibers, though all remained within COSC spec; current production is tighter
Notable in
- Tudor Black Bay 41 79540
- Tudor Black Bay 36 79500
- Tudor Pelagos LHD 25610TNL
- Tudor Black Bay 58 79030N
References in our catalog using this caliber
- Tudor Black Bay 58, Navy 79030N2018–present
Buying advice
Practical guides for buying a watch with this caliber on the pre-owned market: