Intelligent heating: 4 large-area heating elements, far infrared heat, fast heating, the maximum temperature can reach 65 C (excluding power supply) 3 Speed control: rechargeable dual intelligent control; ZD heating temperature control; safe low pressure; Separate temperature control; Speed control 3; smart chip; Button temperature control; Adjustment of three levels. MATERIALS: The heated vest is made of memory cloth, and the internal heating parts are made of spandex, very soft and no radiation. It is very easy to shoot and is not PR. Washable vest: no fear of tearing and washing for a long time; easy to clean; direct washing; Pay attention to remove the power bank before washing. Put the USB interface back into the pocket and pull the zipper, please use it again to make sure dry then use. (Machine wash in laundry bag) Applicable sports: camping, skateboarding, self-driving, climbing, cycling, traveling, diving, daily warm wear, etc. The inner heating part adopts carbon fiber wire, no radiation, stable heat generation and long lasting. long service life. How to use: 1. Take out the USB socket and connect to the mobile power bank. 2. Press the power bank output switch. 3. Long press the temperature control switch on the trunk for 3 seconds to start heating. When the red light is on, it is automatic temperature control heating. 4. Manual adjustment For three heating levels, red light is continuous high temperature heating, white is continuous medium temperature heating, and blue is continuous low temperature heating. 5. Long press the temperature control switch for 3 seconds and turn off the light to stop heating. Note: It needs to be used with Power Bank (power bank is not included) and you can use your own power bank. Washing instructions: 1. Take out the power bank, add neutral detergent. Do not rub or beat it strongly, and use the clothes washed after natural ventilation and drying. Questions require attention: 1. If you don't use it for a long time, please don't connect to the power bank. 2. Do not use high temperature water or strong acid detergent. 3. It is strictly forbidden to use electricity for wet clothes. Please turn off the power immediately when you get wet in the rain. 4. The duration of continuous heating depends on the capacity of the power bank. Color: gray, pink (optional) Cotton Weight: about 400g Recommended size: S: 160cm M: 165cm L: 170cm XL: 175cm Xxl: 180cm Note: The size of the clothes is smaller, it is recommended to take a larger size. List of packages: 1 x heated vest (no power bank) 1x USB cable 1 x User Manual