Usage Tips:Features: Functional car accessories: Our car fuel saver helps stabilize, increase power, speed up engine starts, improve brake sensitivity, and increase engine efficiency and power performance. Additional features: This car fuel saver is well designed to help stabilize circuit voltage, avoid large fluctuations, increase power torque and speed up starting. Easy installation: Simply plug this item into your car39;s cigarettes lighter and it will start saving gas and money immediately. Practical car accessory: The compact and portable fuel saver makes your engine last longer and allows you and your family to enjoy a more environmentally friendly trip. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: ABS electronic components Size: 8*11*2.5cm Instructions: Compatible with any vehicle From trucks to sedans, it works just fine Simply plug it into your cigarettes lighter Note: Plug it into the cigarettes lighter, not into a power outlet or other 3-in-1 devices, as this will not work. Package List: 1/2pcs Fuelsync Gas SaverNote: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.