The Casio G-Shock G-Steel GST-B100-1A is the ultimate fusion of toughness and technology. Powered by Tough Solar and equipped with Bluetooth smartphone link, this analog-digital hybrid keeps you connected and on time — no matter where you are. Tough Solar — solar-powered, no battery changes needed Bluetooth Smartphone Link — auto time sync and phone finder via Casio Watches app Carbon Core Guard Structure — ultra-tough carbon fiber insert for shock resistance Analog-digital combination display Shock resistant and 200M water resistant World time — 39 time zones, 48 cities + UTC Stopwatch — 1/100-sec, 1,000-hour Countdown timer — 1 to 24 hours 5 daily alarms with snooze Full auto-calendar Super Illuminator LED backlight Style code: GST-B100-1A Case dimensions: 55.3 x 48.6 x 14.8mm | Weight: 81g Solar-powered, Bluetooth-connected, and built to G-Shock's most demanding standards — the GST-B100-1A is for those who refuse to compromise on performance or style.
