love it on my lower back

The power quite surprised me. It is much larger and stronger than it appears in the picture. I think this is a great low-cost alternative to high-priced deep tissue massagers. The only thing I dislike about it is that it resembles a large vibrator. I would definitely feel awkward pulling it out and using it on my sore muscles where anyone can hear it. It is loud because of its strength and size. The head unit has a little more give than I expected, but that allows it to move smoothly, but needs constantly applied pressure. It also worried me that it might get warm to the touch being a USB powered unit, but it did not. Overall, it exceeded my expectations.