Product Specifications Professional High Quality Silver dual-head chestpiece for adults. Big side for adults. Small side for a child or auscultating slight and low-frequency sounds. Considerately dual anti-chill ring design. The connecting spring is embedded, and ear tips are specially designed to fit the structure of the ear. Stainless steel chest piece, excellent sound conduction. Transportation and storage conditions: Environment Temperature: -40°C~ 55℃ Relative Humidity: 10%~93% Atmospheric Pressure: 700hPa~1060hPa
