Frederique Constant Automatic with E-Strap FC-303LGR5B4 Casio G-Shock G-Steel Bluetooth Connected GSTB200-1 selectable illumination duration

selectable illumination duration

It’s also compatible with our line of Varia™ cycling awareness devices

20-second alarm lasting

Lug to Lug:52mm

Lug width: 18mm

Frederique Constant Automatic with E-Strap FC-303LGR5B4 Casio G-Shock G-Steel Bluetooth Connected GSTB200-1 selectable illumination durationFrederique Constant Automatic with E Strap FC 303LGR5B4 Built by the watch industry experts that created the Horological Smartwatch, Frederique Constants E Strap is a logical next step to add smart functionality to existing watches. The ultra small buckle extension can hardly be seen, as it is thin and covered by the leather strap. The Frederique Constant E Strap is built on the full Horological Smartwatch Platform and its sophisticated functionality.