• Dual-frequency membrane that allows switching between low and high frequencies without rotating the chestpiece. • Handcrafted stainless steel chestpiece for superior acoustics. • Dual-lumen tubing that eliminates friction noise for optimal auscultation. • Single-sided chestpiece design, easy to store. • 3M Littmann soft eartips for a comfortable fit and good ear canal sealing. • Innovative tunable diaphragm technology for versatile performance in identifying and studying heart and lung sounds. • Anatomically correct headset for improved listening comfort. • Latex-free, includes small and large eartips, special procedures adapter, and instructions. • Product dimensions: 4.3 cm wide, 38 cm high, 17 cm long. • Product weight: 0.45 kg.