U50 TPD & Winder Settings | Swiss Watch Store
Wondering how to programme your watch winder for the Sinn U50? You are in the right place. This model carries reference 1050.010. It is powered by the Sellita SW300-1 movement. Below are the correct TPD and rotation-direction figures for this model, so your watch is always ready to wear.
TPD and Winding Direction
The correct setting for the U50 is 650 turns per day, bidirectional: 650 turns per day with the rotor turning in both directions.
| Turns per day (TPD) | 650 |
| Rotation direction | Bidirectional |
| Movement | Sellita SW300-1 |
Why the Correct Setting Matters
Too few turns and the U50 stops between wears; the right figure keeps the mainspring in its sweet spot, where the movement runs most consistently. And there is no risk in experimenting: a modern automatic cannot be overwound on a winder, because the mainspring's slipping bridle releases excess tension. Getting the setting right is about convenience and accuracy, never about avoiding damage.
Choosing a Watch Winder for the U50
The key feature to shop for is programmability: independent TPD and direction controls that cover 650 TPD bidirectional. Single-watch winders are ideal if the U50 flies solo; multi-watch winders make sense the moment you own two or more automatics. Our watch winder collection covers both.
U50 Winder FAQs
What's the correct TPD setting for the U50?
The U50 is specified at 650 turns per day. Most programmable winders offer this as a standard preset.
Which winding direction should I use?
Bidirectional — the winder should rotate in both clockwise and anticlockwise directions.
Can I use any watch winder for my U50?
Yes — provided it's programmable. Verify the winder offers 650 turns per day with bidirectional rotation before buying; fixed-setting winders may not match.