A replacement matte black resin band suited to the G-Shock GAS100 model. The Casio product code for this item is 10410441.
This is the genuine band only, which is the original for:
GA150-1A
GA150MF-1AER
GA150-1AER
GAS100-1A
GAS100B-1A
GAS100B-1A2
It can also be fitted to other G-Shock watches within the range with the following case numbers:
GA150
GAS100