RENATA's comprehensive assortment of over 40 different watch battery types, mostly of the silver oxide 1.55 V system, 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 optimized volume/capacity ratio 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 being leak proof thanks to a sophisticated sealing process. Constant availability, Renata's professional expertise is worth having on your side. And in your watches.Genuine Renata.