Amazon.com: 3M Littmann 6157 Cardiology IV Stethoscope, Standard-Finish Chestpiece, 27", Caribbean Blue Tube: Industrial & Scientific
Amazon.com: 3M Littmann Stethoscopes: Cardiology IV
Amazon.com: Stethoscope Case Compatible with 3M Littmann Classic III/Lightweight II S.E./Cardiology IV Diagnostic/MDF Acoustica Deluxe Lightweight Dual Head Monitoring Stethoscope-Green(Box Only): Office Products