I read one review that said it was too powerful to be used anywhere but the low back...I need it for neck pain...the review said it was too strong and made them tense up too much..what is your voltage and how does it compare to others on the market?
Melissa D. asked on Feb 21, 2013
It depends on intensity/voltage selected. The intensity range is 0-80 volts.
George from Groupon replied on Feb 21, 2013