Buy one if you feel cold, don't expect vendor response if you have questions/problem
The hand warmer is pretty good, the build is solid, and it heat up fast, since it have USB-C input for charging, so it charge pretty fast too.<br /><br />I use it when my fingers feel too cold before playing violin or piano, which help a lot.<br /><br />I can charge phone and hand warmer at the same time, which is nice.<br /><br />The only down side is cannot charge warmer at the same time when warmer mode is on.<br /><br />Update review, send vendor email and get no response, be careful
Rating: 1 stars