Features: 100% brand new and high quality Stethoscope head: Acoustic transmission in the heavy metals did not decay, the real clear without attenuation. A range of noise reduction, reduce the sound produced by the head contact with the product probe. High quality PVC tube, non-toxic rubber plug, super soft design, to avoid external noise. Automatic springback Y tube, long time use, portable measurement, examine multiple body parts and to detect abnormalities. Great for listening to various bodily sounds such as the heart & lungs, respiratory system, digestive system. Lightweight, easily kept close at hand by clasping around your neck or fitting into the convenient pouch. Specification: Material: PVC+Aluminum Alloy Optional Color: Black, Gray, Pink Size: As pictures shown.(app) Tube total length: 58cm(22.83in) Chest piece diameter: 4.7cm(1.85in) Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Stethoscope(other accessories demo in the picture is not included.)