New G-STEEL Bluetooth Models: GST-B100D-2A, GST-B100G-2A, GST-B100XB-2A Casio is releasing three new G-Shock G-STEEL GST-B100 watches in November 2018 in Japan: the GST-B100D-2AJF (left), GST-B100G-2AJF (middle), and ... ...