Instructions for using car heated seat cushions:1. After receiving the goods, first install the heated seat cushions on the seats! Tie up the backrest elastic! Fix the hooks and other items properly without obvious displacement! (If the seat cushion is not fixed properly and needs to be moved, it is easy to wear out the electric heating wire inside the seat cushion, resulting in not being hot!)The heated seat cushion should be used on top! It is placed above all seat covers! It comes into direct contact with human bodies!2. Before using the heated seat cushion, check whether the iron plates on both sides of the cigarette lighter plug are curved! If it is not or is obviously flattened, then the iron plate must be slightly bent at the arc point before continuing to be inserted into the cigarette lighter mouth for use! Remember! (Because if the iron sheet is preed flat and inserted into the cigarette lighter port without adjustment, it will cause poor contact with the cigarette lighter plug, causing heat and melting of the plug! This will make the seat cushion unusable!)3. Check and insert the plug into the cigarette lighter port. The person must sit on the heating pad, and then turn the switch to the high HI position. Wait for 2-3 minutes for the temperature to rise and heat up quickly, and then turn the switch to the low LO position! If you keep playing high-end, it will automatically power off when the temperature reaches a certain level of around 60 degrees! Below around 30 degrees, it will reopen! This has temperature control inside! Heat and keep warm, promote blood circulation!4. Do not use the heating pad for more than 30 minutes before starting the car! If the heating pad is not used when getting off the car, please turn off the switch and unplug the cigarette lighter plug!Product Features1. Two minute rapid heating, adjustable temperature, 30 -65 2. High quality bakelite plug with built-in fuse, always safe3. Elastic straps, sturdy and durable