Targeted Heat Therapy: Carbon fiber far infrared heating with 5V low voltage for safe and stable performance. Quickly heats within seconds to deliver soothing warmth to the wrist and hand, helping to promote circulation, relieve discomfort, and increase hand flexibility. 3 Temperature Settings: Features three adjustable heat levels with LED indicator lights: green (approximately 122°F), blue (approximately 140°F), and red (approximately 158°F). Simple one-button control for easy operation. One Size Fits All: Designed to fit either the left or right hand with universal sizing. Covers the palm, back of hand, and wrist. Insert the thumb through the designated opening and secure the brace around the wrist using the adjustable hook-and-loop closure for a comfortable fit. USB Powered: Powered via USB cable that can be connected to a variety of devices such as a PC, power bank, car charger, or USB adapter. Ready to use with plug-and-play functionality. Relief for Wrist Discomfort: The heating pad wraps fully around the wrist to deliver consistent therapeutic heat. Suitable for those experiencing discomfort from repetitive strain injury, carpal tunnel syndrome, tendonitis, or hand and wrist pain caused by prolonged typing, driving, or holding a child.