Identical as CK-S747P only with stainless steel metal retaining ring.

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

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

Stainless steel metal parts features a deep cone-shaped bell and uniquely designed ``UltralfexTM`` binaural tubing assembly for excellent acoustic perception, as well color coodinated plastic retaini

Stainless steel metal parts features a deep cone-shaped bell and uniquely designed ``UltralfexTM`` binaural tubing assembly for excellent acoustic perception, as well color coodinated plastic retaini

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

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