Fast Heating 12-24V Heated Car Seat Cover Universal Car Seat Heater Winter Car Heating Cushion Back Warmer Heating Pads 1pc One-click start ,Quick heat in 30 seconds. Intelligent temperature control - set intelligent downshifting and intelligent shutdown during the heating process to ensure safety. After heating for 10 minutes, it will automatically shift to medium gear, and after 50 minutes, it will automatically shut down. Overload protection - automatically shuts down the power supply when the voltage is less than 10V or greater than 28V Voltage: 12-24V Color: Black Material: Flannel Package Including: 1pc Heated Car Seat Cover