| Stethoscope Features | Electronic Stethoscopes (4100WS) | Electronic Stethoscopes (3000) | Master Cardiology Stethoscope | Cardiology S.T.C (Soft Touch Chestpiece) Stethoscope | Cardiology III Stethoscope | Master Classic II Stethoscope | Classic II S.E Stethoscope | Classic II Pediatric and Infant Stethoscopes | Select Stethoscope | Lightweight II S.E Stethoscope |
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| Main Application Areas | Cardiology/ High Performance | Cardiology/ High Performance | Cardiology/ High Performance | Cardiology/ High Performance | Cardiology/ High Performance | Physical Assessment, Diagnosis | Physical Assessment, Diagnosis | Physical Assessment, Diagnosis | Blood Pressure, Limited Physical Assessment | Blood Pressure, Limited Physical Assessment |
| Overall Performance (1-10 Scale) | 10+ | 10+ | 10 | 9 | 9 | 8 | 7 | 7 | 6 | 6 |
| Chest Piece Design and Technology | Matte Finished Plated Alloy | Chrome Plated Polymer | Polished Stainless Steel Single sided | Matte Finished Stainless Stell. Single-sided wirth Soft Touch Insert | Machined Stainless Steel. Two Sided Tunable | Plated and Polished Alloy Single- sided | Machined Stainless Steel. Two sided | Machined Stainless Steel. Two sided | Coated Alloy Single-sided | Metal/Resin Composite Two-sided |
| Binaurals | Single-lumen Tubing Incorporating Electronics | Dual-lumen | Dual-lumen | Dual-lumen | Dual-lumen | Thick Single- lumen | Single-lumen | Single-lumen | Single-lumen | Single-lumen |
| Tunable Diaphragm | Yes | Yes | Yes | Yes | Yes- Two Tunable Diaphragms | Yes | Yes | No | No | No |
| Headset Material | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Std.Diameter Aerospace Alloy | Std.Diameter Aerospace Alloy | Std.Diameter Aerospace Alloy | Std.Diameter Aerospace Alloy |
| Standard Length | 27"/69,6 cm | 29"/73,7 cm | 22"/56 cm 27"/69 cm | 22"/56 cm 27"/69 cm | 22"/56 cm 27"/69 cm | 27"/69 cm | 28"/71,1 cm | 28"/71 cm | 28"/71 cm | 28"/71 cm |
| Total Weight | 220 grams | 185 grams | 175, 185 grams | 168, 178 grams | 165, 175 grams | 155 grams | 125 grams | 105 and 90 grams | 115 grams | 118 grams |
| Diaphragm Diameter | 1.31"/2,9 cm | 1.31"/2,9 cm | 1.75"/4,4 cm | 2.15" x 1.9" 5,4cmx4,8cm (Teardrop Shape) | 1.7"/4,3 cm | 1.75"4,4 cm | 1.75"4,4 cm | 1.31"/2,9 cm 1.06"/2,7 cm | 1.75"/4,4 cm | 2.15" x 1.9" 5,4cmx4,8cm (Teardrop Shape) |
| Bell or Small Diaphragm Diameter | NA | NA | NA | NA | 1.3"/3,3 cm | NA | 1.25"/3,2 cm | 1"/2,5 cm 0.75"/1,9 cm | NA | 1.34"x1.30"/ 34cm x 32cm |
| Warranty | 2 Years | 2 Years | 7 Years | 6 Years | 5 Years | 3 Years | 3 Years | 3 Years | 2 Years | 2 Years |
