Hi Betty,
I ordered the anondyne 120 home unit, came with easy to apply velcro pads. It comes with 4 pads that fit pretty much any body area. It is the same unit the chiropractors use as part of their "treatment protocol" that can cost thousands of dollars with no proven outcomes. My unit was around $900 but I think you can find them on ebay etc...
https://anodynetherapy.com/anodyne-therapy-products/
https://www.ncbi.nlm.nih.gov/books/NBK76072/