Mini portable, no need to take outside the oil, accurate measurement, extend the life of the car. One-button boot detection, higher accuracy. LED display screen can accurately display the results, clearer readings. Use the optical principle to check the oil condition of the engine, and get the latest status of your oil anytime and anywhere. With optical probe, no need to take the oil outside, just put the probe into the oil to get the test results. Specifications: Material: ABS Color: yellow Battery: 4 x AAA battery (not included) Probe diameter: 5.3mm Oil hole requirement: diameter 6mm, curvature Less than 30 Hose length: 800mm / 31.5in Detection type: turbineoil Total height: 170mm / 6.7in Package Contents: 1 x Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.