Yosoo Hot Cold Therapy Heated Neck Wrap Brace Adjustable Neck Heating Pad for Headache Stiff Neck Pain Relief and Warmer with Mesh Bag for Gel Ice Pack

You can not only use it before a computer, a portable charger will allow you to be on the go while still having a heated neck wrap (moving around, in the car, jogging, on a plane).
Multiple additional benefits include (wrapping on the knee, laying over your shoulder for pain relief, sitting and using on your arm, wrists, hands and knee and eliminate debilitating pain from other parts of your body as well)
This neck heat wrap works like a charm, it is cycled automatically so if you feel the heat go away it will come back after a cool down period.
Product parameters:
Material: Highest Grade Neoprene.
Size: One size fits neck from 15'' up to 22" for men and women.

Output voltage: 5V/DC;
The first gear ( red light), temperature is 56-65℃;
The second gear ( white light), temperature is 46-55℃;
The third gear (blue light), temperature is 40-45℃.

Note: There will be 2-4 ℃ of error with different measuring instruments and measuring position!

Washing instructions:
1.Washed by hands only.
2.Don't wring it vigorously.
3.Do not be exposed to the sun, firing or iron the heated pad brace to avoid damage the insulator of heating conductor.

Considerations:
1.Batteries, connecting plugs and chargers should avoid contact with water during operation. It should be used in completely dry condition.
2.NOT for Pregnant women, young children and those who can not express their willingness.
3.Those with pacemakers are disabled.

It has 3 models, red led is with the highest temperature. Once you turn it on by pressing the power button for 3s, it would getting heat. 5 minutes latter, it would turn automatically to white led, which is medium lever. And then auto to blue, which is the lowest. If you need the highest all the time, you need press the button manually to turn it to Red model, and the change cycle would be stoped.