GSTB100-1A | Black G-STEEL Men's Watch G-SHOCK | CASIO。G-SHOCK G-STEEL カシオ Gショック Gスチール CASIO ソーラー。GSTB100-1A | Black G-STEEL Men's Watch G-SHOCK | CASIO。マリページたです。お申し込みされて無い方のお買い上げはご遠慮願います。。美品】カシオ CASIO ジーショック G-SHOCK ジースチール G–STEEL。G_SHOCKG_STEELGST_Tough solar (solar charging system). Water resistant to 20 ATM. Mobile link function (functions linked with Bluetooth communication with compatible mobile phones) World time: 38 cities around the world (38 time zones, with automatic daylight saving set) + UTC (Coordinated Universal Time) display and home city time switching function. 5 time alarms, time signal. Battery indicator display. Power saving function (after a certain time passes in a dark place, the display will turn off and save energy) Fully automatic calendar. Switch between 12 and 24 hour displays. ● Switch sound between ON/OFF Date display (month/date display replacement). Day of the week (English, West, French, Germany, I, and Dew) Double LED Lights: LED light for dial (super illuminator, afterglow function, afterglow time switch (1.5 seconds/3 seconds), LED backlight for LCD parts (super illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds) included)。