3M™ Littmann™ Stethoscopes
3M™ Littmann™ Stethoscope Product Comparison
| Littmann Features | Master Cardiology | Cardiology III | Master Classic II | Classic II S.E. | Pediatric and Infant | Lightweight II S.E. |
| Product Positioning | Outstanding Acoustics | Outstanding Acoustics/Versatile Pediatric & Adult Chestpiece | Portable Yet Excellent Acoustic Performance | The Industry standard | High Acoustic Sensitivity | General Purpose |
| Overall Littmann Performance (1-10 Scale) | 10 | 9 | 8 | 7 | 7 | 5 |
| Chestpiece Design and Technology | Matte Finished Plated Alloy | Machined Stainless Steel Two-Sided Tunable | Plated and Polished Alloy "Master" Single-Sided | Machined Stainless Steel Two-Sided | Machined Stainless Steel Two-Sided | Machined Aluminum Two-Sided |
| Binaurals | Double Lumen | Double Lumen | Thick Single Lumen | Single Lumen | Single Lumen | Single Lumen |
| Tunable Diaphragm | Yes | Yes - Two Tunable Diaphragms | Yes | Yes | No | No |
| Warranty | 7 Years | 5 Years | 3 Years | 3 Years | 3 Years | 2 Years |
| Headset Material | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Wide Diameter Aerospace Alloy | Std. Diameter Aerospace Alloy | Std. Diameter Aerospace Alloy | Std. Diameter Aerospace Alloy |
| Eartip Type | Soft-sealing | Soft-sealing | Soft-sealing | Soft-sealing | Soft-sealing | Soft-sealing |
| Extra Eartips | Yes | Yes | Yes | Yes | Yes | No |
| Special Adapters | Yes | No | No | No | No | No |
| Standard Length | 27"/69 cm | 27"/69 cm | 27"/69 cm | 28"/71 cm | 28"/71 cm | 28"/71 cm |
| Total Weight | 180 grams | 165, 175 grams | 155 grams | 125 grams | 105 and 90 grams | 90 grams |
| Chestpiece Weight | 90 grams | 87 grams | 80 grams | 65 grams | 45 and 30 grams | 25 grams |
| Diaphragm Diameter | 1.75"/4.4 cm | 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 |
| Bell or Small Diaphragm Diameter | N/A | 1.3"/3.3 cm | N/A | 1.25"/3.2 cm | 1"/2.5 cm .75"/1.9 cm | 1.25"/3.2 cm |
| Main Application Areas | Cardiology/High Performance | Cardiology/High Performance Adult and Pediatric | Physical Assessment and Diagnosis | Physical Assessment and Diagnosis | Physical Assessment and Diagnosis | Limited Physical Assessment and Blood Pressure |
| Product | Master Cardiology | Cardiology III | Master Classic II | Classic II S.E. | Pediatric and Infant | Lightweight II S.E. |
All Littmann Stethoscopes are latex-free.
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