Material: Aluminum + ABS

Power: 5W

Voltage: 7.4V

Battery capacity: 1100 mAh

Charging time: 2.5 hours

Use time: 2 hours

Product size: 10*10*35mm

Gear: cold compress 3 gears

 hot compress 3 gears

Cooling Temperature: 18 /13 /8 degrees

Heating temperature: 35 /40 /45 degrees