ERKA LISTEN TO BLOOD PRESSURE. The Erkaphon is specially adapted to the needs of nursing staff. This stethoscope is ideal for routine examinations and for measuring blood pressure. The special shape of the bell enables auscultation of hard-to-reach areas. MEMBRANE ERKA's convex membrane provides excellent resonance and sound transmission. PAVILION The valve plate is made of polished, high-gloss chrome-plated brass. It is quick and easy to clean, for perfect surface hygiene. EAR TUBES The ergonomic, adaptable shape of the ear tubes guarantees perfect comfort. The default 15° inclined ear tubes adapt to the characteristics of the user's ear canal. EARSETS Ergonomically shaped, soft ear tips adapt to the shape of the ear canal, providing comfort and an excellent acoustic seal against ambient noise. Warranty: 10 years Ref: IBSTS13