About Us


J. Marc Sarais

Position: CEO/Managing Director
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Sigma Electronic SA was founded in 1978 in Biel/Bienne (Switzerland), the very heart of the Watch Industry, by Antonio E. Sarais and today, the medium-sized company is proud to be the global leader in the field of water-resistance testing.

The initial goal of the company was the in-house conception, development, manufacture and trade of measuring instruments for the international watch industry. Today, Sigma Electronic exports instruments all over the world. From international watch factories to prestigious watchmakers, from wearable to portable mainstream objects manufacturers, from automotive components to industrial mass products manufacturers, all are trusty customers of Sigma Electronic since decades.

The company provides exclusive expertise and profound knowledge in the waterproofing field, technical consultancy, development of test equipment concepts and customized solutions to be incorporated in clients’ own QC testing chain.

Sigma Electronic is proud to claim that all the products they manufacture are 99% Swiss Made. All mechanical parts manufacturing, electronics and equipment’ assembly are produced in Switzerland.

Please browse our website and don’t hesitate to contact us for any question you may have.

Thank you and enjoy your visit!


We provide the manufacturing industry with high-quality Water-Resistance Testing equipment which combines state-of-the-art electronic and micro-mechanic technology, elegant design, efficient concepts and easiness of use. A solid construction and high-quality materials ensure a long lasting and trouble-free operation of the devices.

We aim to exceed our clients’ expectations by providing competent and professional consulting, reliable technical support and efficient after-sale service.