A compressed shoulder heating pad, USB powered adjustable shoulder support strap, unisex, suitable for knees, elbows, and shoulders, battery free, non

The product can be used with a USB control cable connected to a mobile power supply, or use three different heating settings with the 2A power adapter (the box has no mobile power or power adapter). Product red light is high temperature, blue light is medium temperature, green light is low temperature.
Attention 1. Please do not leave the device on for extendedperiods unattended to avoid accidents.We recommend to use 2-3 times a day, a use of about 30 minutes, the use of obvious feel uncomfortable, please stop using immediately. 2.Do not keep the device running while sleeping toavoid low-temperature burns.Please stay away from bed and quilt when using, keep well ventilated, avoid fire and so on.