Community verified— Verified from trusted watchmaker & collector sources
What Battery Does Bering 10725-010 Use?
Battery
SR521SW
Silver Oxide Low Drain 1.55V
- Battery life
- ≈ ~2 years
- Voltage
- 3V
- Caliber
- Miyota 5R21 (Ultra Slim)
Where to buy SR521SW
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Important: ⚠️ Ultra-slim Bering models use SR521SW (318) — NOT the more common SR621SW (364). The batteries look similar but differ in height. Wrong battery will not fit.
Compatible SR521SW Batteries
Renata 318Maxell SR521SWSony MurataVarta V318
All listed brands are direct equivalents. Always use Silver Oxide Low Drain 1.55V chemistry.
Other Names for SR521SW
SR521SW318379V521
See full cross-reference table How to Replace the Battery in Bering 10725-010
- Professional replacement recommended
- SR521SW is a rare ultra-thin battery — not SR621SW
- Verify battery size before opening watch
- Handle with extreme care — ultra-slim movement
Related Watch Models
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.