heating system. Features of heated socks Klan Dual Power: They can be powered by portable batteries to be inserted in the pocket is predisposed to 7.4 volts for a comfortable heating in the use of stockings both in motion for all other outddor activities (skiing, cycling, etc) with both batteries in 12 volt which give the shoes power to handle the most severe winter in motion. The product is sold without connecting cables that are available separately. A thin wire heats the upper and lower part of the front part of the foot to always keep at a comfortable temperature. The Klan Dual Power socks can still be directly connected to the motorcycle battery for a comfortable long as your trip. Sock elastic cotton with Dual Power heating system with control button on each sock to 4 levels, allows the use of gloves with different types of fuel: Direct connection to a source to 12 volts (the motorcycle battery). Connect to two batteries lithium polymer battery to 12 volts to be inserted into the prepared pocket. Connect to two batteries lithium polymer 7,4volt to be inserted into the prepared pocket.