Where did the Sony button cells go? 

In 2017, Murata acquired Sony's battery and accumulator division and took over manufacturing of the Sony brand.
Since then, the Murata brand has replaced the Sony brand, but the quality and performance of the batteries remain unchanged .

Quality: no changes

The batteries now carry the Murata brand but continue to be manufactured in the same factories, by the same production teams who still follow the same strict quality procedures.

Performance: no changes

Murata 's mercury-free high-performance button cell batteries are globally recognized by leading watch movement manufacturers, covering approximately 45% of global demand.


- Inventor of the mercury-free silver oxide watch battery
- Renowned supplier to global watch movement manufacturers
- Over 40 years of manufacturing experience
- Over 1 billion watch batteries produced

Namely: Murata batteries combine perfectly with Miyota movements.

About Murata

Established in Kyoto, Japan since 1944, Murata is the global leader in the design, manufacture and supply of advanced electronic components. 
The company produces more than 100 billion components per month and employs 75,000 people worldwide. Its annual sales amount to 13.1 billion Euros.

Murata silver-oxide Batteries

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