rechargeable percussion massager ideal for deep and targeted treatment of fatigue and muscle pain. with fast and repetitive movements, this massager stimulates blood circulation and heat, making the treatment faster and more effective. the main difference between percussion therapy and vibration therapy is that percussion therapy goes much deeper into the muscles to increase the blood flow and oxygen needed for effective treatment and recovery. with 6 selectable intensity levels and 4 interchangeable massage accessories depending on the treated area. long-life lithium battery allows for maximum convenience without cables. quiet and light - for comfortable operation.