Drawing from our DNA in watchmaking, we are driving advances in our precision timekeeping and sensing technologies to create a diverse lineup of distinctive wearable products that are a joy to wear and use for a broad range of customers.

Epson is one of the world's largest manufacturers of crystal devices. Our crystal devices are found in everything from timepieces to communications equipment, electronic devices, base station communication networks.
Quartz watches have a crystal and an internal IC that generate an electrical signal every second. The crystal unit (resonator) is integrated with an oscillation circuit in the IC. Its oscillations serve as the reference for each second. This enables the precise generation of one-second intervals.
The crystals in these devices are made from synthetic quartz. Epson itself grows the synthetic quartz that is the foundation of our core technology. Here, we provide an overview of Epson's advanced manufacturing technology for synthetic quartz.