Tough to say "I Hate" a stethoscope that cost just a couple dollars. Bought this to keep in the shed to use on horses. Big loud heart tones and resp sounds in a horse. You don't need monster amplification and you're not listening for heart murmers or respiratory rales and ronchi, you're simply counting pulse and respirations. This SScope works "OK" for that BUT, there seems to be no difference between twisting it to small or large diaphragm/bell. It hears the same out of both sides, no matter what setting you choose. So expect to hear ambient noise from the "other" bell as you press the business end against the patient.