I bought the V.1 Bang massager, and when I had a problem getting it started, I contacted customer service and they were so fast to fix the problem, and sent me the most recent version (V.2) within a few days. At first, my husband, who usually rolls his eyes when I make an online purchase, was reluctant to use it, but after our first round of golf of the season, he was willing to give it a try. I helped to use it on his problem areas to begin, and after now I see him carrying it around using it...