The G-SHOCK G-STEEL GST-B1000D-2A delivers refined toughness in a sleek, minimalist design. Built with a bio-based carbon and stainless-steel case, solid stainless-steel band, and Carbon Core Guard structure, it offers exceptional shock resistance and 200 metres of water resistance in a compact, comfortable profile. Tough Solar technology provides up to five months of use (or up to 18 months in power-saving mode), while Bluetooth® smartphone connectivity enables automatic time adjustment and easy settings. Finished with a screw-lock crown, mineral glass, white LED Super Illuminator, full auto-calendar, and everyday functions including stopwatch, timer, and alarms, this is a versatile G-STEEL built for modern, all-day wear. - Case size: 46.9 × 44.2 × 11.6mm; weight: 118g - Bio-based carbon & stainless steel case with solid stainless steel band - One-touch 3-fold clasp; screw lock crown; mineral glass - Shock resistant with Carbon Core Guard structure - 200 metres water resistance - Tough Solar (solar powered) with power saving and low battery alert - Approx. battery life: 5 months (normal use) / 18 months (power save, total darkness) - Bluetooth® smartphone link with auto time adjustment, easy watch setting, time & place, phone finder - Accuracy: ±15 seconds per month (without mobile link) - LED light (Super Illuminator) with afterglow; white LED - Stopwatch, timer, daily alarm & hourly time signal - Full auto-calendar (to year 2099) - Regular timekeeping: analogue 3 hands, 24-hour sub-dial, day indicator & date display