556A TPD & Winder Settings | Swiss Watch Store

The Sinn 556A is an automatic watch: it winds itself from the motion of your wrist, but on the days it sits unworn a watch winder keeps the mainspring topped up. This model carries reference 556.010. It is powered by the Sellita SW200-1 movement. Below you'll find the exact TPD setting and winding direction the 556A needs.

TPD and Winding Direction

The correct setting for the 556A 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 SW200-1

Why the Correct Setting Matters

An automatic watch is only as accurate as its power reserve allows. Keep the mainspring properly tensioned and the 556A will hold its rate and be ready to wear the instant you pick it up — no resetting the time and date. Set the TPD too low and the watch can run down between wears. The movement will not be damaged (modern automatics have a slipping mainspring that prevents overwinding), but an under-wound watch is simply not doing its job. Correct settings are about accuracy and readiness, not safety.

Choosing a Watch Winder for the 556A

For the 556A, look for a programmable winder offering a 650 TPD bidirectional programme. One watch? A single winder. Two or more automatics? A double or triple winder keeps the whole rotation ready. You'll find suitable models in our watch winder collection — check the programme list before you buy.

556A Winder FAQs

What's the correct TPD setting for the 556A?

The 556A 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 556A?

Yes — provided it's programmable. Verify the winder offers 650 turns per day with bidirectional rotation before buying; fixed-setting winders may not match.