Professional Hospital EMTCardiology Stethoscope Stainless Steel Doctor Nurse Vet Classic Stethoscope

this stethoscope advantages are as follows: 1.our ears hang for copper material, durable.The aluminum is brittle crack easily. 2.we stethoscope shrapnel is 5 mm in diameter, ears hang good balance.Than 4 mm, easily around and uneven. 3.we head diaphragm for imported fiber production said glass diaphragm conduction effect is good, durable.The sort of white than domestic diaphragm, easy peeling, cracking. 4.we have professional inspectors for 100% of full inspection before shipment. Silver plating, spring inside the double tube, finger type design on the back, head band against the cold. Pressure is different, the hearing effect is different, ears hanging ear canal design

Head diameter: 4.5 cm Stethoscope overall length: 80-83cm

Product material: Ears hang: stainless steel Ears hang spring leaf: stainless steel double shell diameter, 5 mm (this poor stethoscope shrapnel is only 4 mm, shell assembly stethoscope, wear on the ear after yi ran side and easy broken) Head: zinc alloy plating nickel (matt) Earbuds: ears hang metal soft earplugs to wear quite uncomfortable (accessories box to send two earplugs) Hose: by non-toxic environmental protection of PVC material, durable, bright color. Diaphragm: best quality glass diaphragm, sound good, durable.