The Casio G-Shock G-LIDE GBX-100-8 is a tough, smartphone-linked digital watch from the G-LIDE sports line, specifically designed for surfers, extreme sports fans, and fitness enthusiasts who require detailed tide and training data. | Casio | | G-Shock G-Lide Quartz GBX-100-8 Digital Smartphone Link Grey Resin Strap Men's Watch 200M | Silver/Black | Best Buy