Brand: Renata. MPN: 329. 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. A network of dedicated importers and distributors in some 100 countries world-wide make RENATA watch batteries readily available to the watch repairer and horologist almost anywhere. Renata s professional expertise is worth having on your side. And in your watches. Thanks to its close association with Swiss watch industry.