This massage head works wonders, especially in hard-to-reach places. Some modes are nice in that you can change the pressure, but there aren't that many modes. Not sure about the 2 hour charge time, but I've used it a few times so far without charging. It's not heavy and cordless, so it's easy to use, and even if you can't reach the spot on your back, you can just lay it down and lie on it to relieve muscle pain/spasms when needed. I recommend this product.
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