1. 5V USB battery electric heated, one button control, low temperature battery is optional .
2. Three temperature settings, Red 52°C/127°F, Blue 45°C/113°F, Green 35°C/95°F
3. By the frared ray, the shoulder and neck physiotherapy waistcoat is sustainable heating and improve the blood circulation to Relieve sore.
4. The shoulder and neck physiotherapy waistcoat can be water resistant.
5. External battery system is safe.
6. Customer tailored design and development service is available.