【CASIO】G-SHOCK Bluetooth Equipped Model GW-B5600HR-1JF Spare links included Bluetooth Equipped Model Product Number: GW-B5600HR-1JF The outer links of the band have metal parts embedded in resin, and the center links use lightweight and highly durable fine resin material, resulting in a design that pursues both weight reduction and strength. The band clasp is a one-push three-fold type, allowing for smooth wearing. By linking with the dedicated G-SHOCK Connected application, accurate time information is obtained from time servers on the internet. Shock Resistant. Glass Material: Inorganic Glass. Radio-controlled watch. Tough Solar. 20-bar water resistance. Battery indicator display. Power saving function. Mobile link function.