Features: Included: battery harness with 15A fuse Four-Season Jacket - includes removable heated jacket liner Durable & abrasion-resistant Cordura shell with removable armor in the elbows, shoulders & back Windproof & waterproof with flexible Thinsulate insulation & breathable Hipora Heating elements within the removable jacket liner in the chest, back, arms & collar Velcro strap on waist and button snap cuffs for an adjustable, comfortable fit Additional Features - vents, front pockets, backside pocket Plug connections located on the sleeves to connect to heated gloves Plug inside jacket to connect to heated pants or socks Power: 77W @ 12V or 6.4A total Max Heat 135 degree F Needed For Use For Standalone Operation: Sold Separately: choice of temperature controller