These new models come with metal parts and buttons, and offer a choice between either blue or rose gold accent coloring on the iconic disk dial at 9 o'clock. GSTB100G comes with Tough Solar technology and Bluetooth connecivity to access an internet time server for accurate timekeeping.
 
Size of case / total weight
GST-B100D 58.1 x 53.8 x 14.1 mm / 185 g
GST-B100 58.1 x 53.8 x 14.1 mm / 101 g
Shock resistant
200m water resistant
Solar powered
LED light (Super Illuminator)
Afterglow
Mobile link (Wireless linking using Bluetooth®)