Breitling Premier B15 Duograph 42 TPD | Aevitas
If you own a Breitling Premier B15 Duograph 42 (AB1510171G1P1, Breitling Calibre B15), here are the correct watch winder settings to keep it running accurately without overwinding.
Note: the Breitling Calibre B15 is a relatively new or uncommon calibre with limited published winder data. The 800 TPD bidirectional setting below follows the manufacturer's calibre family baseline β check your watch's documentation if unsure.
Recommended Winder Settings
| Setting |
Value |
| Turns per day (TPD) |
800 |
| Winding direction |
bidirectional |
| Movement |
Breitling Calibre B15 |
Why These Settings Matter
Setting your winder to 800 TPD bidirectional matches the Breitling Calibre B15's power reserve characteristics. Too many turns per day won't damage a modern automatic (the mainspring slips), but it causes unnecessary wear. Too few and your Premier B15 Duograph 42 will run down and stop, losing time and date.
All Aevitas winders offer programmable TPD settings from 650 to 1,850, so you can dial in exactly 800 for your Premier B15 Duograph 42.
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