Special characteristicsBattery pack BL1055B, in boxBattery connection on the side of the shirt.Comfortable heating by 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.Preselection of three heating settings by button with LED indication of the selected setting.Heated undershirt made of thin and elastic material.Washable in the washing machine at a maximum of 30°C.Technical dataPlatform: LXT / CXT Runtime medium (BL1460B): 10 : 30 hoursRuntime high (BL1860B): 07 : 30 hoursRuntime low (BL1040/41B): 15 : 00 hoursRuntime high (BL1040/41B): 03 : 30 hoursHeat settings: High/medium/low Runtime low (BL1460B): 23 : 00 hoursTumble dry: Yes Runtime medium (BL1860B): 16 : 00 hoursRuntime low (BL1860B): 33 : 00 hoursRuntime high (BL1460B): 05 : 30 hoursRuntime medium (BL1040/41B): 07 : 00 hoursUSB port (charging mobile device): 1 Colour: black Washing instructions: 30 °C Lining: Polyester (100%) Outer material: Polyester (100%) Voltage: 10.8-18 V Documents User manual