MAXTEC - MaxBlend 2

The MaxBlend 2 is an all-in-one blender, O2 monitor, and flow meter.
 
It includes a dual-scale flow meter that is offered in 4 different flow range options. It also includes a backlit LCD, smart alarms, DC power port, bleed control for gas savings, extended battery life, and more—all backed by the Maxtec two-year warranty.