- Size & Compatibility: This 5-inch tachometer gauge is designed for cars with 4, 6, or 8-cylinder engines. Please note that it is only compatible with 12V gasoline engines and not suitable for diesel vehicles. Confirm your engine specifications before purchasing. - Accurate Measurement: Gain precise insights into your automobile's performance with a measurement range of 0 to 11,000 RPM. This high-precision instrument features a clear scale for easy reading, enabling safer driving by helping you understand and control your engine's RPM. - Adjustable Lighting: Enhance your driving experience with seven vibrant LED backlight colors. The built-in redshift light ensures visibility at night. Upon powering on, the tachometer automatically calibrates the pointer position for optimal accuracy. - Personalized Backlight Options: Customize your tachometer by selecting from seven backlight colors: Dark Blue, Yellow, Pink, Light Blue, Green, Red, and Transparent. - Practical Applications: Ideal for car enthusiasts looking to monitor engine performance during spirited drives or track days. Also serves as a practical accessory for everyday drivers who want to maintain optimal engine operation and fuel efficiency. - Material and Build Quality: Constructed from durable materials to withstand automotive environments, ensuring longevity and reliable performance. This tachometer is an essential tool for anyone looking to enhance their vehicle's instrumentation, offering clarity, accuracy, and customization for a more engaging driving experience.