Features 1. Warm up your muscle before exercise, reduce fatigue/pain and good for your recovery. 2. Effect on skin and subcutaneous tissues. Effect on central and sympathetic nervous system. 3. For pain on muscles, tendons and joints. 4. Exercise rehabilitation. 5. 4Pcs replaceable tips, you can use them for different part of your body. 6. 6 mode in different vibration frequency, for free adjustment. 7. 2400mah rechargeable battery. 8. Heat dissipation design. 9. Less than 45db, low noise.