From G-SHOCK, the watch that always strives for toughness, the first G-STEEL line-up model to offer chronograph performance in analogue format, but still maintain the G-SHOCK level of shock resistance. The GST-B100D features a solid case and a simple stainless steel bracelet. The dial at 9 o'clock has a multi-functional rotating disk that is cut to resemble the thick blades of a jet engine. Rotation of the blades reveals red colouring behind the disk, and this change in colour is used to indicate the battery level and the alarm on/off setting. The blades also rotate in the Timekeeping and Stopwatch modes with the passage of time. A new layer guard structure houses resin cushioning parts inside the case, for a more elegant design and a better fit to the wrist. High-density mounting technology makes it possible to create a module that is smaller and thinner, which also contributes to a better fit. This watch is equipped with Bluetooth® which lets it connect with a smartphone at the press of a button, and acquire time information from an internet time server.Other functions include a solar-powered battery with up to two years of power reserve, high brightness LED light illumination, and dual dial World Time.
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