Designed to enhance the important sounds and giving you the ability to hear pulmonary, cardiac and vascular sounds, the double and double and triple head Harvey DLX stethoscopes help you achieve great results without depending on variable pressure techniques. The dual bore tubing integrated with the Harvey DLX creates two sound channels and works well with the brass chestpieces to deliver a full range of crisp and clear physical sounds. Backed by a 10 year warranty, the Harvey DLX is latex free and comes with interchangeable comfortable ear tips and rotatable binaurals. Additionally, the tubing of the DLX stethoscope can extend up to 28 " and is designed exclusively to accentuate your auscultation abilities.