Want to relax after a busy day at the office. Want to relax your muscles after a workout. Want to relieve back pain in your spare time. As a professional muscle recovery tool, our massage gun will be the best choice. Notice: please charge the massage gun before use. Do not use the massage gun while charging. Do not massage the bones as this may cause injury. Please do not work continuously for more than 1 hour. Do not soak in water. Keep away from liquids or heat sources. Keep vents free of dust and debris. Do not remove the screws or attempt to remove them. If any adverse reactions occur, discontinue use immediately.