Seiko Epson Corporation

Kiyoto Takeda

Koki Takasawa

Takaya Masaki

Kazunari Agesawa

Kiyoteru Furukawa

An electronic watch includes a hand configured to indicate time, a dial including a mark, a movement including a hand shaft configured to rotate the hand and a motor configured to rotate the hand shaft, and a battery configured to supply power to the motor, wherein the battery is disposed between the dial and the movement, and has a first opening through which the hand shaft passes.

Electronic watch

Provided is a timepiece case that does not require a seal ring, such as an O ring, that is made of a resin material. The timepiece case includes a case body configured from metallic glass; and a button part that is formed integrally with the case body and is flexible.

Timepiece case and timepiece

A timepiece comprises an atomic oscillator for generating and outputting a reference clock signal, and a timepiece module that operates based on the reference clock signal, wherein the atomic oscillator and the timepiece module are disposed separately so as to be thermally separated. The timepiece also comprises a crystal oscillator for generating and outputting a first oscillation signal, an atomic oscillator for generating and outputting a second oscillation signal with a higher precision than the first oscillation signal, a timepiece module that operates based on the first oscillation signal and the second oscillation signal, and a thermal separator for thermally separating the atomic oscillator from the crystal oscillator and the timepiece module. A portable timepiece and electronic device can thereby be configured so that the effects of heat generation can be reduced and power consumption can be reduced even in cases in which the atomic oscillator is used as a reference oscillator.

Growing community of inventors

Shiojiri, Japan

Kiyoto Takeda