Omega Seamaster Aqua Terra 41mm 2502 TPD & Winder Settings | Aevitas

Owners of the Omega Seamaster Aqua Terra 41mm 2502 often ask us which winder programme this movement actually needs. The answer is 650 turns per day on a bidirectional cycle — the figures are set out below.

Recommended Winder Settings

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

Recommended Winder

Single Watch Winder in Ebony Macassar Wood Finish

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Why These Settings Matter

Timekeeping suffers first when an automatic runs low on reserve, which is why the daily turn count matters. 650 TPD keeps this movement topped up; substantially fewer turns lets the reserve ebb away until the Seamaster Aqua Terra 41mm 2502 stops altogether.

Excess turns, by contrast, do no harm at all. The slipping mainspring in a modern automatic releases surplus tension automatically at full wind, so the movement can never be overwound by a winder. Choosing too high a TPD costs nothing but a little extra wear on the winder itself.

Every Aevitas winder can be programmed from 650 to 1,850 TPD in either direction, so matching the 650 TPD this watch needs takes seconds.

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