Features:It can quickly detect the mechanical noise emitted by diesel engines, cylinders and cars, and accurately locate the fault.This Electrical Stethoscope is a high performance maintenance tool which is particularly suiable for use in machine noise detection.It is very useful and easy to operate.Adjustable pick-up loudness control.Headset combined with ear padding to cut out background noises.The detector has a high-sensitivity probe so that you can use the unit to detect and locate the position.Suitable for automobile, truck machinery, cylinder sound diagnosis, rapid diagnosis of fault location.Simple to carry, can be used anytime, anywhere.