1. 3 Heat Levels Press the switch and instantly release the warmth for you, 3 heat levels ( 37 /98.6 , 45 /113 , 55 /131 ) at your choice.
2. Quadruple Protection Safety assurance quadruple protection system, heating plate adopts quadruple protection to protect you with actions.
3. Fast Heating As a knee heater, infrared heat compress to enjoy a comfortable warm feeling, accelerate deep into the legs.
4. 8000mAh Capacity 8000mAh rechargeable battery with USB data cable ensures a long use time.
5. Portable Neck Warmer The neck warmer is portable, bringing you more warmth in cold winter, perfect for home, office, and outdoor sports.

Specification:

Item Type: Neck Heater
Material: ABS + PC + Aluminum Alloy
Weight: Approx. 341g / 12oz
Voltage: 5V
Current: 2A
Power: 8W (maximum)
Battery: Polymer lithium battery 8000mAh (included)
Heat Levels: 3 Heat Levels
Temperature Range: 37 -55 / 98.6 -131

What's in the box
1 x Neck Heater
1 x USB Data Cable
1 x Manual