Yup. It also gives you a readout for ohm resistance for the heads you attach to it. The biggest upside is the fact that you can change the batteries. Most of the "pen" style ones go to the trash once the cell is dead. My last one lasted about three months. They're supposed to go about a year (about 400 charges) I was pissed, so I ordered this beast so I don't have to put up with that bullshit again. Also just got a huge bottle of my favorite juice in the mail (eastwood by Indigo Vapor)