Two-sided chest piece with tunable diaphragms on both the adult and pediatric sides. Single-piece tunable diaphragm is easy to attach and easier to clean because its surface is smooth without crevices. Pediatric side converts to a traditional open bell by replacing the single-piece diaphragm with a non-chill rim. Next-generation tubing provides longer life due to improved resistance to skin oils and alcohol, less likely to pick up stains. Small tunable diaphragm is useful for pediatric, small or thin patients, around bandages and for carotid assessment. Stainless steel chest piece is precision-machined into an aesthetically pleasing, less angular shape, the stem features open side indicator. Snap-tight ear tips have a soft, smooth surface providing a comfortable acoustic seal and comfortable fit. Five-year warranty.