Introducing the GST-B300, the first G-STEEL watch with a front button, and which adopts a new Carbon Core Guard structure that delivers superior shock resistance by using the lightness and outstanding rigidity of carbon fiber. The GST-B300 has Tough Solar power and Bluetooth smartphone link. The battery indicator at the 6 o’clock position, designed to evoke a brake disk, shows the remaining battery power by an arrow pointer and a curved red bar, providing visually interesting ways to check the battery. Other features include world time, 1/1000-second stopwatch, 1/10-second countdown timer (24 hours max), 5 multi-function alarms (with daily, 1 time, schedule), and full auto double LED lights (Super Illuminator) with adjustable afterglow. GST-B300S-1AER has a silver coloured stainless steel bezel and a black soft urethane band.