Features:

• Ergonomic handling thanks to novel design: extra-ordinarily flat aluminium chest-piece without edges, easy to push under the cuff when measuring blood pressure.
• Special membrane, 28 mm, with particularly flat and soft non-chill rims for improved adaptation on the skin.
• Matt chromium-plated binaural, which can be adjusted by turning.
• Soft, replaceable ear-tips with metal screw thread for comfortable and effective sealing of the external auditory canal.
• Reinforced Y-tube made of PVC to shield against disturbing stray sounds.
• Overall length: 30in (77 cm)
• Latex-free. 
• Comes with a pair of replacement ear-tips and a replacement membrane
• FDA Approved
• CE Certified
• 2 year warranty