This stethoscope is designed as a non-invasive medical auscultation instrument to detect heart and lung sounds on a healthy skin around the external thoracic region. Due to its sound amplification function, it may cause damage to user's ears if used otherwise than its intended medical diagnosis purpose.Use only if you are a medical professional and do not leave stethoscope unattended around children.General usage: The stethoscope’s headsets are ergonomically pre-angled. Headsets are anatomically adjustable for best fit, comfort, and sound transmission.This stethoscope exists in single-head chest piece or in dual-head chest piece. The dual-head chestpiece contains a diaphragm side for detecting high-frequency sounds, and a bell side for detecting low-frequency sounds. According to the auscultation need, simply turn the fully-rotational acoustic valve stem to select the proper side of the chestpiece. Hold the chestpiece firmly against the desired auscultation location on the patient's external thoracic region. Prior to each use, make sure all parts are securely fastened and properly connected.General cleaning and care: Clean stethoscope thoroughly before each use. Use clean cotton cloth or swab with isopropyl alcohol solution to cleanse all soiled partsAvoid prolonged exposure of acoustic tubing to excessive heat, cold, solvents, moisture and oils/lipids secreted by human skin.

• Single adult metal flag (Ø: 45 mm).
• Anti-cold ring and flag of the color of the tube. 
• Lyre incorporated in the tubing.
• Comes with 1 pair of PM soft tips, 1 pair of GM soft tips and 1 pair of rigid bits, in a cardboard box
• Anatomically designed headset embedded into the tubing.