1、Choose Right Energy Level: With 5 adjustable levels, effectively relieve muscle soreness, activate stiff muscles, and relax your body according to your needs. Eliminate fat deposits, shape your body, and boost blood circulation for faster results. 2、Reduce Soreness: Stimulate nerve endings, promote blood circulation and tissue metabolism, and release endorphins and other substances to relieve soreness. 3、Improve Blood And Lymph Circulation: Enhance the elimination of waste in inflammatory areas, reduce local tissue swelling and inflammation, accelerate fat burning and sculpt your body. 4、Recommended Usage: We suggest using the device 2‑3 times a day, 20 minutes per session, to relieve knee, shoulder, joint, and muscle, arthritis soreness, and facilitate faster recovery from sprains or severe falls. 5、Powerful And Effective Wavelength: The 650nm red ray LED and energy levels penetrate deep into injured tissues, providing faster and more noticeable results. Red ray treating device features 9 LEDs and 5 energy levels. Item Type: Red Ray Treating Device Material: ABS, metal Battery Capacity: 1100mAh (built in) Ultrasound Energy Level: 5 levels Ultrasound Mode: 3 kinds 650nm Red Ray Energy Level: 5 levels 1 x Red Ray Treating Device 1 x Power Plug 1 x User Manual