Special featuresBattery pack BL1055B, in boxBattery connection on the side of the shirt.Comfortable heating from 4 heating elements, 1 on the abdomen, 1 on the back, and 2 at the wrists.Read the safety instructions and user manual carefully before use.Supplied adapter can also be used with our ventilated clothing.Three heating settings pre-selected by button with LED indication of the chosen setting.Heated undershirt made of thin and elastic material.Machine washable at a maximum of 30°C.Technical dataOperating time high (BL1040/41B): 03:30 hoursHeat settings: High/medium/lowTumble dry: YesOperating time low (BL1460B): 23:00 hoursVoltage: 10.8-18 VOperating time medium (BL1460B): 10:30 hoursOperating time low (BL1040/41B): 15:00 hoursColour: BlackUSB port (charging mobile device): 1Platform: LXT / CXTOperating time high (BL1860B): 07:30 hoursOperating time low (BL1860B): 33:00 hoursOperating time medium (BL1860B): 16:00 hoursWashing instructions: 30°C and wash with similar coloursOperating time medium (BL1040/41B): 07:00 hoursOperating time high (BL1460B): 05:30 hoursLining: Polyester (100%)Outer material: Polyester (100%)DocumentsUser manual