Had a few people express interest in hearing my opinion on this product, so I'm putting together a thread of my impressions. Please note this is solely based on my online research. https://twitter.com/ZainNaghmi/status/1343015469297639424
First impression: immediate skepticism about the help with "carpal tunnel" claims. Carpal tunnel syndrome involves increased pressure/decreased space within the carpal tunnel. Per a 2012 systematic review, there's limited evidence of effectiveness of massage to improve CTS.
I would VERY much like to see the research on the faster recovery after carpal tunnel surgery. I can definitely buy the pain relief with arthritis and a temporary increase in local circulation, although research shows that massage does not increase circulation in the long term.
I don't see any major issues with its design when it comes to addressing joint or muscle stiffness/soreness, although I'd be wary of the "wrist" massage mode. Putting pressure directly on the carpal tunnel for a sustained period isn't a great idea.
I don't have any inherent objection to the idea of a finger massager, although I do immediately object to the suggestion that massaging your fingers will "help with [...] brain activity and sense of touch".

(It won't.)
tl;dr It's probably safe and *might* be helpful for hand and finger joint/muscle soreness but imo not worth $130. Don't use the wrist massage function because your carpal tunnel shouldn't be compressed. It's not going to fix carpal tunnel syndrome if you have it.
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