Development of Watch (G-SQUAD) with Solar Assist, GPS, and Pulse Measurement Function

Abstract

  CASIO Computer Corporation have developed products “G-SQUAD:GBD-H1000”, a brand of shock-proof watch “G-SHOCK”. This paper explains the technical summary of the development of GBD-H1000. By increasing the efficiency of the solar cell and reducing the current of Silicon On Thin Buried Oxide (SOTB), etc., the area of the solar cell and the battery have been reduced, resulting in a size reduction (about 20% reduction in volume) and improved wearability. In addition, visibility of high-definition display was improved (transmittance improved by about 20%) by laminating windshield and solar cells and adopting Moth-eye Film. In addition, while downsizing, it has become a product with improved usability due to its enhanced functions (pulse measurement function and incoming call notification by vibration).