Model Number: XR-M026-001 Brand Name: Xuerui Key Specifications/Special Features: The Features :Medical Stethoscope, MultifunctionStethoscope hose is made with special processes (for example, purification of natural rubber)This stethoscope can obtained the clear audio by rotating the tuning ring, letting mothers clearly feel the hearbeat of the fetus.This instrument can quickly restore to its original shape without crease, adhesion or crack.The hose as fine as baby skin. Every contact reveals its softly, silky surface. To wear it daily takes care of your health and does not hurt the skin.When wearing the stethoscope earplug, you will feel silkily smooth and cotton-like soft.The ear hook is perfectly fitted with the ear through an adequate angle, effectively isolating outside noise. In case of wering for a long time, it still has clear sound without oppressive feelings.The Usage:The user presses the stethoscope head to apply pressure on the vibration membrane.When the lower plane of the vibration is well fitted with the built-in sound-collection ring of the stethoscope, the amplitude strength of the vibration membrane can be changed to gain another clear audio ( high frequency audio), for example, heart murmurs, resplratory rales, dry reles and other minor sounds.