Not what I expected.  No battery and can burn if connected to wrong power supply
I expected this was a neck brace with heat and assumed it had a battery power source.  I was wrong.  After receiving (without the controller with variable settings show above) I find it must be plugged into a lower power source to use the heating option.  And reviews talk about people getting burned when using a power supply too strong.  No power supply is provided with the brace.<br /><br />Not what I expected and this will be going back.
Rating: 1 stars