Works as it should.
Overall no complaints about this unit. Battery life seems to last multiple sessions, power output is good (yet to venture past half intensity).  Seems to ease the back/leg pain as well as any other unit I have tried.  Multiple modes are nice, some are useless/completely unrelated to their icons.  Overall if you are looking for a cheaper tens unit, I would say this should fit the bill.
Rating: 4 stars