[Safe & Fast Heating] We use graphene inside the wrist wrap, which heats up quickly and is absolutely safe. It has an automatic power-off function. You don't have to worry about it burning your sheets.[Heat Therapy for Pain Relief] Wrist heating pads is effective arthritis, carpal tunnel, basal thumb arthritis, tendonitis or tendinopathy, a ganglion cyst or simply just a wrist sprain or strain.[3 Heating Levels] This product has 3 heating temperature levels, corresponding to 3 colors on the controller, red: 60C/140F, green: 50C/122F, blue: 40C/104F.[Easy to Use] This Wrist Heated Wrap comes with a USB power cord. You can plug it into any place where you can power it, such as a PC, a power bank, or a USB plug. You can enjoy a heated wrist and hand therapy to relieve your pain in the spine no matter you are in the office or traveling.[Multi-purpose] This Heating Wrap can be used not only on the wrist, but also on the feet or arms. It is a multi-purpose Heating Wrap.