G-SHOCK offers the first G-STEEL lineup models featuring chronograph performance in Analogue format. The dial at 9 o'clock includes a multi-functional rotating disk, cut to resemble the thick blades of a jet engine. These watches are equipped with Bluetooth(R) technology, allowing them to connect to a smartphone at the press of a button and acquire time information from an internet time server. The result is accurate timekeeping no matter where in the world you are. Other functions include Tough Solar, combined with CASIO's original power-saving technology for a stable supply of power, high-brightness LED light illumination, and dual dial World Time. The GST-B100D features a sleek stainless steel band for a timeless and sophisticated look.