Hotwired 12v Bluetooth Heated Jacket Liner Keep the cold from sinking into your bones with Hotwired Bluetooth Heated Jacket Liner. The carbon fiber heating elements warms up your back, chest, arms, and collar. Bluetooth technology allows you to control your heated liner via the Hotwired Bluetooth App with 10 temperature settings or the integrated smart soft touch temperature controller with 3 temperature settings. Construction: Lightweight nylon outer shell Heating Elements: Carbon fiber heating elements 6 zone heating elements (1 on the back, 2 on chest, 2 on sleeve and 1 on collar) Temperature Control: Integrated smart soft touch temperature controller with 3 temperature settings Hotwired Bluetooth App (Apple and Android compatible) with 10 temperature settings Connectivity: Connects to Hotwired gloves via integrated connector wires Requires Y-splitter (sold separately) for connecting to Hotwired heated pants Power: Includes battery harness and fuse Power consumption: 74 Watts (6.2 Amps) Warranty: One year limited warranty