Renata 379 Swiss made lithium button/coin cell watch battery SR521SW, 0% mercury free with long expiry date.
Renata 379 SR521SW watch battery, Renata's make over 40 different watch battery types, mostly silver oxide 1.55 Volt, this offers a suitable power source for any electronic device requiring an ultra-compact, long lasting, low voltage power source.
Thanks to its close association with Swiss watch industry, Renata has first-hand knowledge of what a high quality watch battery must stand for.
An optimised volume/capacity ratio.
Used in Watches, Car Keys, electronic appliances & devices
Dimensional precision and stability.
High capacity retention on storage (low self-discharge).
Excellent reliability thanks to a uniformly high quality level.
State of the art leakproofness thanks to a sophisticated sealing process.
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