Longer Coverage(37''): The red light therapy belt boasts longer cover area(37'' in length) and more lamp beads. Comfytemp's red light therapy wrap features 63pcs of visible 660nm red light and 63pcs invisble 850nm infrared light, which can penetrate into your body and bring you warmth from the inside out. It can relieve neck pain, sooth mucle tension and relax joint stiffness.,Specifically for Small Areas: The red light wrap's compact and lightweight design makes it much more convenient and comfortable for treating smaller areas than a full-size red light belt, fits well and not easy to fall off. A great choice for people with small area(like neck, knee, feet, hands, head, calf, wrist, fingers, thumb, arm, elbow and ankle) pain, soreness and stiffness.,High Power: The red light therapy wrap for neck offers power up to 10W with greater red light intensity. For the first use, we recommend you start from the low level. Insist on using the red light wrap 1-2 times a day for a period of time. For the first week, you may feel localized warmth; for longer continuous use, you may feel relieved, relaxed and more energetic.,Portable USB Port: The red light therapy wrap for knee is convenient and portable. The USB power port provides the flexibility to use red light therapy at home or on the go. You can plug the USB port into an USB outlet, battery, PC USB port or car USB port to use it. Note: this infrared light wrap for feet comes with USB cable, but does not come with the charger.,Easy to Use: The red light therapy wrap for hands are easy to operate. With only two buttons for control, even the elderly can operate the wrist bands for pain easily. Long press the power button for 1 second to power on, short press power and mode button to switch power levels and light modes. 3 power levels(low, medium and high) and 3 light modes( Red, NIR, Red+NIR) for you choose.