ERKA MEMBRANE The convex ERKA. membrane provides excellent resonance and sound transmission. BELL The horns are made of polished, high-gloss chrome-plated brass. In addition, the absence of porosity makes the surface particularly hygienic. The anti-cold ring ensures optimum patient comfort and protects the membrane. SPRING AND TUBE Thanks to the spring integrated into the tube, the acoustics of the pinna are transmitted to the ear almost without loss. The stethoscope tube has two parallel internal channels. This prevents the rubbing noises characteristic of two separate tubes. EAR TUBES The ergonomic, adaptable shape of the ear tubes guarantees perfect comfort. The default 15° inclination of the ear tubes adapts to the characteristics of the user's ear canal. EAR TIPS Ergonomically shaped, ultra-soft eartips adapt to the shape of the ear canal, providing great comfort and an excellent acoustic seal against ambient noise. 10-year warranty Ref : IBSTS17