Aqua Terra 150M TPD & Winder Settings | Swiss Watch Store
The Omega Aqua Terra 150M 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 220.10.41.21.03.004. It is powered by the Calibre 8900 movement. Below you'll find the exact TPD setting and winding direction the Aqua Terra 150M needs.
TPD and Winding Direction
The correct setting for the Aqua Terra 150M 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 | Calibre 8900 |
Why the Correct Setting Matters
An automatic watch is only as accurate as its power reserve allows. Keep the mainspring properly tensioned and the Aqua Terra 150M 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 Aqua Terra 150M
For the Aqua Terra 150M, 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.
Aqua Terra 150M Winder FAQs
What's the correct TPD setting for the Aqua Terra 150M?
The Aqua Terra 150M 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 Aqua Terra 150M?
Yes — provided it's programmable. Verify the winder offers 650 turns per day with bidirectional rotation before buying; fixed-setting winders may not match.