Excellent sound quality and intensity. Different selection of areas of focus such as cardiac, pulmonary or wide. Can record up to 120secs or play live for your techs to teach them what heart and lungs sound like. Only criticism is that I double checked the box for AirPods because the advertising looked like I should have them included, then finally figured out the Eko app in terms of the attachment.. and listening live, just need a bit more clarity there! Us professionals want the quality of product not false gimmicks to get us to buy ☺️ Very worthwhile purchase for any medical professional ☺️