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What Battery Does Appella 4377 Use?

Battery
SR621SW
Silver Oxide Low Drain 1.55V
Battery life
≈ 3–5 years
Voltage
3V
Caliber
Ronda 762 / 763
Where to buy SR621SW
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Compatible SR621SW Batteries

Renata 364Maxell SR621SWSony MurataVarta V364

All listed brands are direct equivalents. Always use Silver Oxide Low Drain 1.55V chemistry.

Other Names for SR621SW

SR621SW364D364V364
See full cross-reference table

How to Replace the Battery in Appella 4377

  1. Professional replacement recommended for Swiss dress watch
  2. SW (Low Drain) type only
  3. Ronda movements are reliable but sensitive to correct battery chemistry

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Related Watch Models

Tissot PRX Quartz 35mm
Battery: SR621SW
Mondaine Railways
Battery: SR920SW

Data verification

Battery information is based on manufacturer documentation where available and community-verified sources. If you notice an error or have official documentation for this model, please contact us to help improve this database.

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