12V Seat ventilation 1pc car seat cover Compatible With Mercedes Benz all models GLA E C CLA CLS S A B CLK SLK G GLS GLE GL ML GLKPower supply: suitable for 12v car, 12V car battery (The power supply cannot be used in series. It is forbidden to plug 12V power into 24V power. If there is an accident, you will be responsible for everything. ) Maximum power consumption: 36W 3W Minimum power consumption: 22W 3W Fuse: 7A Power cord .Material: polyester fiber 12V Universal Cigarette Lighter Connector Warm Tip: If the manual measurement error is 1-3cm, the actual object shall prevail .Standard Edition:1 large fan + 6small fanDeluxe Edition:1 large fan + 6small fan+2massagerHello dear buyer,welcome to my shopWe are a store service team with professional experience,so you can contact me if you have any questions about our products,we will help you deal with this problem as soon as possible,and if you have any questions about our product models,please also Contact us,we will answer every question you have,our aim is to serve every customer who enters our store,I hope you have a happy shopping.Have a nice day,customer service team.