Dual Therapy, One Device: Switch between hot or cold massage therapy to soothe inflammation and relax stiff muscles. Percussion Power: High-performance motor offers deep tissue massage to melt away pain and fatigue. Four Interchangeable Heads: Customizable heads for general relief, pinpoint targeting and thermal therapy. Go Anywhere Comfort: Cordless design with rechargeable battery makes it perfect for recovery at home or on the go. Smart Safety Timer: 10-minute auto shut-off for both massage and thermal therapy keeps your sessions worry-free. Fast Heating and Cooling: Temperature control from 50 to 122 Fahrenheit degrees in seconds.