3 file temperature control adjustment. Full body waterproof. Washable USB charger. Mobile phone, charging treasure, computer... can supply power Carbon fiber heating conductor, safe and energy saving,Heating up to 7 hours The weight of the product is about 500g, and the inner clamp is pure cotton to ensure that the temperature will not be lost. Waterproof, anti-fouling, warm, breathable, wear-resistant, ultra-light, anti-static, acid-proof. Softness index: Polyester Cleaning instructions: 1. Machine washable or hand washable 2. Please do not wring dry by hand The temperature of the energy-saving gear is about 45C, the temperature of the comfortable gear is about 50C, and the temperature of the warm gear is about 65C. Instructions: 1. Take out the USB plug 2. Connect to the power bank 3. Press the power bank output switch 4. Long press the chest temperature control switch for 2 seconds 5. The red light flashes, it is automatic temperature control heating 6. Long press the chest temperature control switch for 2 seconds, turn off the light to stop heating Washing instructions: Take out the power bank and add neutral detergent to hand wash. Do not rub or beat strongly. Good clothes can be used after natural ventilation and drying. Precautions: 1. Do not use the power bank for a long time. 2. Do not use high temperature water or strong acid detergent 3. It is forbidden to use electricity for wet clothes, please turn off the power supply and stop using it if it gets wet in the rain. 4. The use time depends on the capacity of the power bank. Package Contents: 1X Heating Vest