3M Littmann Lightweight II SE Stethoscope is the lightest weight of all the Littmann adult stethoscopes(118gms). This stethoscope has a dual sided chestpiece that provides versatility of both a tunable diaphragm and open bell. Teardrop shaped chestpiece for easier positioning under blood pressure cuffs and around bandages. Tunable diaphragm that you can hear high or low frequency sounds by slightly adjusting pressure on the chestpiece. Soft sealing eartips provided an excellent acoustic seal and comfortable fit.