XAAR128 printhead is the earliest and widely used in the market,there are five models:

XAAR128-200 (80),200dpi,0.54 m /s,color identification is blue (common market model)
XAAR128-200 + (80-W) 200DPI,color identification is purple
XAAR128-360 (40-W),360dpi,0.39m/s,color identification is gray (common market model)
XAAR128XL (40-8.3),360dpi,0.59 m /s,color identification is dark gray
XAAR12840-5.5,360DPI ,color identification is black

There are 128 nozzle and the internal filter mesh is larger. The ink droplet is around 80PL. The head cannot control the head voltage through software when the temperature changed,which lead to its lifetime reduced compared with other kind of heads.