Feature 1It can quickly detect the mechanical noise emitted by diesel engines, engine underpan and cars, and accurately locate the fault. 2Six channel design, sound and light synchronization. Select the channel you want to receive and send the sound to the headset. 3This Electrical Stethoscope is a high performance maintenance tool which is particularly suiable for use in machine noise detection. Features: It can quickly detect the mechanical noise emitted by diesel 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. Specifications: Material: ABS Color: black Package Weight: 1140g Package Size: 24.3*18.9*10.3cm Package list: 1 * Car Noise Finder Kit Package List 1 * Car Noise Finder Kit