factory direct sales luxury adult double head double-sided dual-use stethoscope stethoscope with color box

1) the product is used for auscultation of sound changes in human heart, lung and organ activities;

stethoscope is to judge vital signs such as heartbeat and blood pressure;

the principle of stethoscope is that vibration conduction between substances participates in the aluminum film in stethoscope, instead of air, which changes the frequency and wavelength of sound and reaches the range of "comfort" of human ear, at the same time, other sounds are covered, and "listening" is clearer. the reason why people hear sound is that the so-called "sound" is the mutual vibration conduction between substances, such as air vibrating eardrum in human ears, which is converted into brain current, so people "hear" the sound. the vibration frequency that human ears can feel is 20-20khz.
another standard of people's perception of sound is volume, which is related to wavelength. the intensity range of normal people's hearing is 0db-140db.

2) material: aluminum alloy listening head, pvc rubber pipe soft ear plugs aluminum ear hanging

3) packaging: neutral color box

4) you can laser type on the listening head or print trademark logo on the diaphragm. the hose is rich in color. conventional colors include black, dark blue, sapphire blue, wine red, army green, etc, or the customer will provide pantone color card number, which is made according to the color card. please contact the staff for details, thank you.

5) accept oem fixed board production, welcome foreign trade industry consultation!

packing rate: 50pcs/carton

gross net: 14/13kgs

carton: 61.5cm * 26.5cm * 45cm