The most popular sizes of watch battery in the Renata SP range, which offers a higher silver content, providing a 60% increase in battery life. ABOUT RENATA A world-class leader in coin cells Renata is already a familiar face on the US market, while we've been supplying our coin cells for many years. But now we've taken the further step of establishing our very own presence in the world's largest economy, with the opening of a new location in Miami from the start of January 2018. This will provide a link between our manufacturing location in Switzerland and our contract manufacturers in Asia. For our customers, our presence in the USA will mean a fast response and the very best technical support. And it will also mean new opportunities: for innovation and for smart distribution.