Hand and Wrist Warmer, Electric Heated Wrap [Safe and Fast Heating] We use graphene inside the wrist wrap, which heats up quickly and safely. It features an automatic shutoff function, so you don't have to worry about burning your skin. [Heat Therapy for Pain Relief] Effective for arthritis, carpal tunnel, basal thumb arthritis, tendonitis or tendinopathy, ganglion cysts, sprains, or strains. [3 Heat Levels] This product has 3 heat temperature levels, corresponding to 3 colors on the control unit: Red: 60°C/140°F, Green: 50°C/122°F, Blue: 40°C/104°F. [Easy to Use] This heated wrist wrap comes with a USB power cord. You can connect it to any USB power source, such as a PC, power bank, or wall adapter. Enjoy heated wrist and hand therapy to relieve pain whether you're at the office or traveling. [Versatile] This heat wrap can be used not only on the wrist but also on the feet or arms. It's a versatile heat wrap. Package includes: 1 * Wrist Warmer