Milwaukee 2331-L M12 12-Volt Large Heated Jacket Set Innovative cordless heated jacket for use at job sites or during outdoor sports activities; includes battery and charger Distributes heat to 3 body zones; includes 3 heat settings plus pre-heat warming mode Uses M12 Red Lithium battery technology to warm jacket; same battery used in Milwaukee's M12 professional power tools Multi-layered soft shell jacket; easy touch heat controller; hand pockets plus chest pocket Up to 6 hours of battery life on a single charge; hand washing recommended (with battery removed)