Loving this watch.. My favorite g-shock I've ever owned!the size is perfect.. The carbon core did make it smaller so its not as big compared to the GST-S110-1ACR I previously owned.. I
G-Shock GST-B200 User Manual / Casio Module 5608
Casio G-shock Smartphone Link 21casio Steel Gst-b300-1ajf Mens for sale online | eBay