On-the-Go Relaxation: The neck massager has a rechargeable lithium-ion battery and can be used cordlessly. A single charge provides up to 90 minutes of relaxing massage. The shawl-like design makes it foldable and easy to carry, ensuring convenience for anytime, anywhere use, allowing you to enjoy a massage whenever and wherever you like. (NOTE: After receiving the product, please fully charge it before the first use. MASSAGER CANNOT BE USED WHILE IT IS CHARGING.) Professional Massage Experience: This neck massager utilizes 20 high-low massage heads to provide a more customized massage. It can rotate forward for kneading and massage, and in reverse for massage, effectively simulating the techniques employed by professional massage therapists to help relieve tight muscles.