Omega Seamaster Aqua Terra Annual Calendar 8601 TPD & Winder Settings | Aevitas

The Omega Seamaster Aqua Terra Annual Calendar 8601 needs a specific daily rotation to stay on time: 650 turns per day, rotating in both directions. Here is the exact programme to dial into your winder.

Recommended Winder Settings

Setting	Value
Turns per day (TPD)	650
Winding direction	bidirectional
Movement

Recommended Winder

Single Watch Winder Brown Leather White Stitching Mains or Battery by Aevitas

£239.00

Free UK delivery • 3 year warranty

Shop Now →

Why These Settings Matter

The 650 TPD figure reflects how much energy this movement uses in a day and how efficiently its rotor converts motion into power. Match it and the Seamaster Aqua Terra Annual Calendar 8601 holds a healthy reserve indefinitely. Set the winder far lower and the reserve slowly drains until the watch stops.

Overshooting is not a hazard. A slipping bridle inside the barrel releases tension once the mainspring reaches full wind — a safeguard fitted to modern automatic movements — so an excessive TPD cannot damage the watch. At worst, the movement is exercised more than it needs to be.

Because all Aevitas winders offer settings from 650 to 1,850 TPD, you can programme exactly 650 TPD for this watch — and reprogramme in moments if you swap watches around.

For Larger Collections