Genuine Casio replacement resin band in black. 

Made for the following model(s): 

G-100-1BV G-100-9BV G-100-9C G-101-1AV G-200-1EV G-2110-1V G-2300-1V G-2300-9V G-2300F-4 G-2310-1 G-2310BC-1 G-2310R-1 G-2400-1V GW-2300F-4 GW-2300FP-4 GW-2310-1 GW-2310FB-1 GW-2310FB-1B GW-2310FB-1B4 GW-2320SF-1B4