- The 1.2in1 car meter serves a dual purpose by displaying both air-fuel ratio and battery voltage, providing critical data that enhances vehicle performance while being easy to read. - Constructed from high-quality plastics, this gauge is designed for long-lasting durability, resistance to aging, and reliable performance in various conditions. - Improve your vehicle's efficiency and driving experience with real-time monitoring of essential metrics, ensuring optimal engine function. - The 52mm/2in universal gauge is compatible with a wide range of vehicles, including 12.0V motorcycles, cars, trucks, and gasoline engines, making it a versatile choice for automotive enthusiasts. Use Scenarios: 1. Performance Tuning: Ideal for tuning your vehicle's engine, allowing you to adjust the air-fuel mixture for maximum performance. 2. Routine Maintenance: Perfect for monitoring battery voltage during maintenance checks, helping to prevent unexpected breakdowns caused by battery issues. 3. Daily Driving: A valuable tool for everyday drivers who want to keep an eye on their vehicle's performance metrics, enhancing overall driving safety and efficiency.