Description:Temperature Shift (Manual adjustment)Warm: 50 (Red Light)Comfort: 340 (White Light)Energy Saving: 30 (Blue Light)Specification:Name: XL/2XL/3XL/4XL Thermostatic Heating USB Intelligent Heating Sleeveless VestFabric Name: PolyesterFabric composition: spandexColor: camouflage graySize: XL/2XL/3XL/4XLVoltage: 5VRated power: 9WRated current: 1850mAFeatures:Infrared fever, neck, back heatingImported carbon fiber yarn, safe, no radiation, heat and temperature, long service lifeOne button heating, three-speed temperature control, there will be light changesInfrared heating, no radiation, built-in heating module, intelligent heatingWaterproof process design, safeHumanized heating part designLong-lasting fever, long battery life, 10000mah8hoursAfter unplugging the power supply, it can be washed and machine washed.Light and closeThe heating process is a hot compress for the joint points of the human body.How to use?Instructions1. Open the pocket and connect the USB connection to the treasure2. Press and hold the mark for 3 seconds to start heating3. Light shift, third gear temperature adjustment4. Press and hold the logo or remove the charging treasure to turn off,Warning:1. This product does not include power bank2. Unplug the power, machine wash, hand washWashing Instructions:1.Take out removable charger.2.Neutral detergent is available and then hand wash.3.Do not force knead or beat.4.After nature air drying can be use.Warm Tips:1.If not used for a long time,please do not plug in removable charger2.Do not use high temperature water or strong acid detergent.3.Forbidden to use electricity for wet clothes,Please turn off the power and stop using if cloth is wet.4.Use time depending on the capacity of removable charge.Application:Unisex, outdoor, everyday leisurePackage Included:1 X Heating vest