Duplex® neonatal is a high-quality stethoscope with a double-chest piece for newborns and infants. It also has improved acoustics. The small precision chest-piece is made of aluminium. It has a 28 mm special membrane with soft and flat non-chill rims for better skin adaptation. It also has a 22 mm bell and a length of 76 cm. Duplex® neonatal comes with a pair of ear-tips and membrane as replacements.