Featuring three frequency options and durable steel binaurals, the Welch Allyn Elite Electronic Plus is for students looking for a higher level of performance and reliability. The stethoscope uses a highly directional, recessed pressure sensor that eliminates ambient noise, enabling you to lock on to the important sounds you need to hear. What's more, accessories can be purchased that electronically capture, record and distribute body sounds or allow multiple users to co-listen, making the scope perfect for teaching or consult situations.