Name : XceeFitOrigin : CN(Origin)Model Number : Heart-lung Cardiology Stethoscopename 1 : cardiology stethoscopename 2 : heart lung stethoscopename 3 : professional stethoscopename 4 : Medical Equipmentname 5 : Medical Devicename 6 : double head stethoscopename 7 : double sided stethoscopeFeature:Excellent acoustic effect: The stethoscope is equipped with high-quality medical TVC tube, matte texture zinc-nickel alloy chest film and high-sensitivity fiber membrane, which has good auscultation effect, even with polyester earplugs, and has excellent external noise reduction effect. It can be widely used for cardiovascular and respiratory auscultation in hospitals, clinics, schools or homes.Material:Aluminum alloy hanger, zinc nickel alloy chest piece, medical PVC tube, polyester earplugs.Size:670mmPipe diameter:about 11mm (0.5 inch)Weight:Approx.396g (With Packaging Box).Package include:1*Stethoscope, 2 pairs*Extraearplugs, 1*Rubber ring.Tips for using your Stethoscope properlyAlign the headsetBefore placing the eartips in your ears, make sure they point forward, away from you. (Figure A) This ensures that the eartubes will align with your ear canals for comfort and maximum sound transmission. Holding the headset in front of you with one eartube in each hand, pull the headset open and place the eartips into your ears. (Figure B)If the fit isn't comfortable,or acoustic performance is lacking, adjust the headset tension. All our stethoscopes feature adjustable headsets. Gently squeeze the eartubes together to increase headset tension; pull them apart to decrease tension.A. Proper InsertionB. Correct PositioningWearing the headset improperly,(eartips pointing backwards, for example, as in Figure C) can result in a poor acoustic seal and, in some cases, complete sound blockage.C. Incorrect Positioning