A stainless steel child model with ``Superflex`` binaural tubing assembly and color coordinated plastic retaining and non chill rings.

All stainless steel metal parts, features patented multi-frequency ``Ring-O-Raised`` diaphragm system, which allows the diaphragm to be pressed upon auscultation with matching ``Ultraflex`` binaural

All stainless steel metal parts, features patented multi-frequency ``Ring-O-Raised`` diaphragm system, which allows the diaphragm to be pressed upon auscultation with matching ``Ultraflex`` binaural

A stainless steel adult model with ``Superflex`` binaural tubing assembly, color coordinated trimmings and applicable for 2 persons doing diagnostic proceedings simultaneously.

A stainless steel adult model with ``Superflex`` binaural tubing assembly, color coordinated trimmings and applicable for 2 persons doing diagnostic proceedings simultaneously.

A stainless steel adult model with ``Superflex`` binaural tubing assembly, color coordinated trimmings and applicable for 2 persons doing diagnostic proceedings simultaneously.

Identical features as CK-S747 only with ``duracote`` solid color coodinated chestpiece, binaural tubing assembly and fit-ups.

Same features as CK-S747P only with gold plated metal parts and ``Ultraflex`` lite binaural tubing assembly.

Identical features as CK-S747 only with ``duracote`` solid color coodinated chestpiece, binaural tubing assembly and fit-ups.