Casio G-Shock GST-B200-1A GSTEEL Bluetooth Solar Rubber Alpina each watch has a power

each watch has a power reserve extending to a full 72 hours

200 mm in wrist length

and a calendar feature

High speed GPS time and time zone adjustment

Casio G-Shock GST-B200-1A GSTEEL Bluetooth Solar Rubber Alpina each watch has a powerCarbon Core Guard Structure. The inner case is made of fine resin that incorporates carbon fiber for light weight along with rigidity that is superior to that of resin. This material protects the internal module from shock induced damage and deformation. The outer case is made of stainless steel. The dual back cover protects the back surface against impact. The smaller case of the GSTB200 series provides a comfortable fit, even though the watch is