Product information:

Warm keeping hot compress electric heating wrist strap
Material: carbon fiber
Applicable scenario: health massage
Model: heating wrist guard
Applicable part: wrist
Heating mode: far infrared heating
Foreign trade export certification: CE.FCC.PSE.RoHS
Voltage: 5V - USB power supply
Temperature control range: 50-70 °
Heating temperature: 70 °
Product category: warm compress
Color: electric heating wrist guard+connecting wire, electric heating wrist guard+connecting wire+10000mAh power pack
Specifications: one size fits all

Features:

1. Carbon fiber far infrared,
2. Hot compress moxibustion,
3. Household use,
4. Movable
5.5V-USB power supply and three gear temperature control

Packing list:

Heating wrist guard * 1+connecting wire * 1 

Or 

Heating wrist guard * 1+connecting wire * 1+10000mah charging bank * 1