Item Type: Infrared Red Ray Device Material: Metal Built in lithium ion battery: 800mAh (included) Application: Promote blood circulation, relieve discomfort, promote tissue repair, and reduced inflammation 1INFRARED RED RAY: By activating cellular pigments, the red ray emitted by this device promotes cellular metabolism and reduces inflammation. 2RETRACTABLE AND HANDHELD: It is a single light source device and features a retractable design, providing you with a versatile and convenient tool for infrared treating. 3RELIEVE MUSCLE FATIGUE: This device provides relief from muscle fatigue and helps alleviate discomfort, allowing you to recover faster and feel more relaxed. 4PROMOTE BLOOD CIRCULATION: It enhances blood circulation, alleviates discomfort, and promotes tissue repair, ensuring a healthier and more resilient body. 5ACCELERATED TISSUE REPAIR: The red ray emitted by this device stimulates cell regeneration and repair, facilitating faster healing of wounds, and muscles.1 x Infrared Red lighting Device 1 x USB Cable