Heat piece: seven pieces (abdomen 2 pieces, sleeves and elbows 2 pieces, back 2 pieces, back waist 1 piece) Open instructions: long press the switch button 1-2 seconds to start working, at this time the red light is on, work is high temperature gear, in the absence of manual intervention, after 5 minutes will automatically jump to the second gear, and display the blue light, work is medium temperature gear, and then manually lightly press the switch can be adjusted to low temperature gear, at this time is to display the green light, and then press can be adjusted to high temperature gear. Endurance time: 10,000 mAh (50W) mobile power, high temperature (65 degrees or so) 4-6 hours, Medium temperature (about 50 degrees) 5-6 hours, low temperature (low temperature 40 degrees) 6-7 hours. Machine washable, no longer worry about the problem of washing, note. Cleaning must be gently and gently wash, can extend the service life of the heater Pocket USB interface, the USB power supply interface moved to the inner pocket, mobile power storage more secure, the button outside, you can directly regulate the temperature. USB power supply interface: USB-5V or 2A power supply interface, connected to the action power can be used (without batteries, need to provide their own)