3M™ Littmann® Stethoscope Cardiology IV Navy Blue Tubing (27”/68.5cm) – Model 6154
Step into your clinical role with clarity and confidence using the 3M™ Littmann® Stethoscope Cardiology IV Navy Blue Tubing (27”/68.5cm) – Model 6154. Designed for medical professionals who demand precision and performance, this stethoscope delivers next-level acoustics for critical listening situations — from the ER to intensive care.
The classic navy blue tubing pairs beautifully with the high-performance chestpiece, striking a perfect balance between professional style and diagnostic strength. Whether you’re monitoring subtle heart murmurs or tracking lung changes over time, the Littmann Cardiology IV 6154 gives you the edge you need with enhanced sound sensitivity and low-frequency detection.
With dual-lumen tubing that reduces ambient noise and a tunable, stainless steel chestpiece on both adult and pediatric sides, this stethoscope adapts effortlessly to a wide range of clinical needs. The 27” length offers comfortable reach, while soft-sealing eartips and an ergonomic design keep you focused and fatigue-free throughout long shifts.
Crafted in the USA and backed by a 7-year Littmann warranty, the 3M™ Littmann® Cardiology IV Navy Blue 6154 is more than just a diagnostic tool—it’s a professional essential trusted by physicians, nurses, and specialists around the world.
Read a professional review about the Littmann Stethoscope Cardiology IV Navy Blue





Rogelio Aguilar –
I’ve been using this stethoscope for a while now, and it honestly feels like an upgrade from anything I’ve owned before. The earpieces sit comfortably and block out most background noise, which helps a lot during busy rounds. I also like how easy it is to switch from adult to pediatric patients without carrying extra equipment.
Rogelio Mendoza –
The Littmann Cardiology IV Navy Blue delivers excellent clarity and feels solid in hand. I’ve been impressed with how well it picks up subtle lung sounds. The only reason I didn’t give 5 stars is that it feels a little heavier around my neck during long shifts, but overall it’s a fantastic stethoscope I’d definitely recommend.