Features: It can quickly detect the mechanical noise emitted by engines, engine underpan and cars, and accurately locate the fault. Six channel design, sound and light synchronization. Select the channel you want to receive and send the sound to the headset. This Electrical Stethoscope is a high performance maintenance tool which is particularly suiable for use in machine noise detection. LED light indicate the strength of signal of the active channel,user-friendly. The detector has high sensitivity and the earphone pick-up sound loudness can be controlled by adjusting its volume control. Suitable for automobile, truck machinery, cylinder sound diagnosis, rapid diagnosis of fault location. Simple to carry, can be used anytime, anywhere. : material: plastic Color: as shown Package Contents: 1 x Car Noise Finder Kit 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.