The new duplex®2.0 with numerous innovative detail solutions, offers acoustics in a class of its own for perfect auscultation of adults and children. Features: – Innovative acoustic system with extraordinary auscultation for all frequency ranges – Precision double chest-piece made of stainless steel or aluminium – Special membrane for precise acoustics, Ø 44 mm, with novel non-chill rims for improved adaptation on the skin – Total length: 74 cm – Weight: 151 g – Latex-free Riester has been designing and manufacturing high quality diagonostic instruments in Germany for medical professionals for over 50 years. They make some of the finest hi-end medical instruments and devices found anywhere and the quality is second-to-none. If you are a doctor or nurse who demands the highest quality for your practice and patients, look no further than Riester.