Discover the location and cause of unusual vehicle noises with the Steelman EngineEAR Stethoscope Auto Diagnostic Tool. The EngineEAR’s ultra-sensitive microphone and amplifier can help you pinpoint strange sounds in your car so you can repair irritating issues before they become expensive problems. The included over-ear mono headphones isolate sound for easy listening and prevent unwanted background noises from bleeding in. Perfect for determining the location of air leaks and pinpointing problematic bearings, bushings, valves, lifters, gear teeth, fuel injectors, other causes of squeaks and rattles, the EngineEAR is a valuable tool to add to your home garage or professional auto shop. The unit operates with a single 9V battery, which is included for convenience. Safely store and transport your EngineEAR in the included foam-padded case. Enjoy a quiet ride with the Steelman EngineEAR. Keep vehicles safe and on the road longer with STEELMAN diagnostic tools. These precision-engineered devices meet or exceed industry specifications and help you identify the sources of troubling noises and other signs of wear. STEELMAN helps you catch and repair problems early so the vehicles in your charge can stay rolling. STEELMAN is an industry leader in automotive and industrial specialty tools and equipment. We manufacture high-quality, innovative products designed to meet the specific needs of mechanics, contractors, and other working professionals. Our selection of tools includes specialized automotive items like diagnostic devices, inspection lights, maintenance tools, and tire repair supplies, as well as traditional hand tools like torque wrenches and screwdrivers. So whether you are a pro mechanic or a do-it-yourself enthusiast, STEELMAN has the tools you need to get the job done.