Features: Very stylish design, small in size, easy to carry and operation The process is painless, non-invasive, no trauma, green and safe. For Knee, Shoulder, Back, Joint Muscle Pain, Arthritic Pain, Sciatic Pain, we suggest use twice a day and about 20-30 minutes each time. At least 4 hours' interval between twice use in a day. About 15 days is one treatment course and 2-3 days' interval between 2 courses. Package included: 1 × Host 1 × Carrying Case 1 × Power Adaptor 1 x USB cable 1 × Manual 1 x Warranty card 1 × Safety glasses.?Creative Gift Choice?This product is a perfect gift for friends, family, and others on birthdays, anniversaries, Valentine's Day and other occasions. Using it can help you fall asleep faster and provide complete relaxation and pain relief. If you are not satisfied with this product for any reason, please contact us and we will provide you with a satisfactory solution. ?Easy to Use?Small size, handheld, designed for home use. There are different recommended usage methods for different body parts. Instructions for use are included in the package. ?Usage method and frequency?Place the instrument directly on the target site, or keep it at 1-8cm, and keep it on each site for 5-30 minutes. Please use this device 1-3 times a day for 7-10 consecutive days, and please pause for 2-3 days before using again. ?Combination of Multiple Theories?This instrument uses modern light therapy principles and combines multiple theories to only provide you with the most effective treatment and relieve your pain. ?Natural Relief?This device is designed to provide soothing relief. is a safe and effective way to soothe your muscles and joints in the comfort of your own home!.