[Powerful Ignition Timing Light] The timing light can detect the ignition timing scale on the engine flywheel or pulley for accurate adjustments. It is compatible with automotive knock suppression control systems and vacuum advance angle control systems, allowing the advance angle to change with engine speed. This timing light is suitable for automobiles, motorcycles, ATVs, boats, and all two-stroke or four-stroke gasoline engines. It operates on 12V ignition systems and supports engine speeds up to 1000rpm.[Why You Need Timing Lights] Due to normal engine wear over time, components such as the timing belt and pulley require periodic replacement. Changes in cylinder pressure may affect engine performance and efficiency, so ignition timing should be readjusted. A timing light can help identify timing changes caused by ignition system issues or be used when resetting timing after replacing vehicle components.[Strong Flash Timing Light with Sliding Sensor Clip & Long Test Lead] The timing light features a high-intensity bulb that produces a bright flash, allowing clear visibility of engine timing marks even in daylight. The sliding sensor clip is designed for secure and easy connection to the high-voltage wire of the No.1 cylinder. The 4.54FT test lead provides ample length for convenient testing of the entire ignition system.[Durable Timing Light with Ergonomic Handle & Strong Bite Clips] The timing light has an ergonomic handle with a comfortable grip and easy-to-use button layout. The outer shell is constructed from high-quality ABS material, offering impact resistance and long-term durability. Metal clips are insulated with rubber sleeves for added safety, and the strong grip design ensures the clips remain securely attached.[Polarity Reverse Connection Protection & Overload Protection] This timing light includes reverse polarity protection to help prevent damage to the device or vehicle in case of incorrect connection. It also features overload protection that automatically disconnects power if excessive current or load is detected during operation.[Easy Operation] Connect the red clip to the positive terminal of the vehicle's battery and the black clip to the negative terminal. Attach the sensor clip to the high-voltage wire of the No.1 cylinder. Note: The arrow on the sensor clip must point toward the spark plug for proper operation. The timing light can also be used on 6-volt electrical systems by connecting an auxiliary 12V battery to power the device.Color: Black Material: Plastic Package Contents: 1 * Timing Light Note: Other accessories shown in images are not included. Note: Slight color variations may occur due to lighting and display differences. Measurement error is +/- 1-3cm.