The Mobile warming "Aspen" heated jacket is ready for any weather, rain, wind and cold. Stay dry with the windproof  and water resisant "WindShark" softshell construction. Stay warm with an integrated Lithium-ion powered far-infrared heating system that delivers 7.4 volts of instant heat for hours. Choose from 4 heat settings to keep you warm and comfortable for hours. Includes: (1) "Alpine" heated Jacket; (1) 7.4 volt 2200mAh Lithium-ion battery and (1) AC Charger.