Introducing a solar-powered radio-controlled runner's model from the "PHYS" sports watch for athletes. Unlike smartwatches: It charges just by wearing it, thanks to solar charging. You can record (memorize) data without the hassle of launching an app. ■Brand: CASIO ■Tough Solar (Solar charging system) ■About battery replacement: It is charged by light such as sunlight. ■Belt adjustment: The belt can be adjusted by the customer. ■Water resistance: 10-bar water resistance ■Functions: ・Case/Bezel material: Resin ・Resin band ・Mineral glass ・Radio wave reception function ・World time ・Stopwatch ・Timer ・5 daily alarms, hourly time signal ・Battery indicator display ・Power saving function ・Full auto-calendar etc. ■Case size (H×W×D): 49×45×11.6mm ■Weight: 46g