Features: Functional car accessory: This car fuel saver helps stabilize circuit voltage, improve engine efficiency, enhance power performance, and increase brake sensitivity. It is designed to support smoother engine starts and improved torque response. Additional features: The device is engineered to help maintain consistent voltage levels, reduce fluctuations, and contribute to overall engine performance. Easy installation: Simply plug the unit into your vehicle’s 12V cigarette lighter socket for immediate operation. No additional setup or wiring required. Practical car accessory: Compact and portable design allows for convenient use and helps promote efficient engine performance, supporting a more environmentally friendly driving experience. Notice: 1. Actual color may vary slightly from the image due to lighting conditions. 2. Please allow 1–3 cm variation due to manual measurement. Material: ABS and electronic components Size: 8 x 11 x 2.5 cm Instructions: Compatible with most vehicles, including trucks and sedans. Plug directly into the 12V cigarette lighter port. Do not use with power outlets or multi-port adapters, as proper function is not guaranteed. Package List: 1 or 2 pcs FuelSync Gas Saver