Multifunctional Two-tube Professional Stetho Fetal Heart Monitor Pregnant Women Charge Doppler No Radiation Measurement Fet

Product technical parameters Frequency response curve: 100-500hz is based on the test sound source. Attenuation shall not be greater than 12dB and 20dB at 500-1000hz. Spring plate hardne: hr15n82.9-88.4. Earring elasticity: pull the two earplugs 140mm apart with a elasticity value of 1.372-1.96n. Earring elasticity: pull the two earplugs 300mm apart, and return after 1 minute. The deformation is no more than 10mm. Diameter of large flat head: 45mm diameter of small flat head: 30mm Diameter of large bell head: 34mm diameter of medium bell head: 25mm Small bell shaped head diameter: 20mm; total length: 74cm [product functions] Commonly used for auscultation of the body's heart, lungs, pulse and other organs of sound change: Cardiovascular, can be used to listen to heart rate, heart sounds, vascular murmur, etc. In terms of respiratory system, it can be used to listen to the respiratory sounds of the lungs and distinguish the diseases in the lungs. When blood preure is measured, it is used to amplify the sound of pulse for doctor's diagnosis. It can also be used to auscultate fetal heart sounds. [product features] 1. The configuration includes a double-sided flat stetho with bell shaped stetho in three sizes: large, medium and small. 2. This product is designed for general use. Three bell-shaped auscultation heads of different sizes can be attached to the large and small diaphragm of the double-sided flat auscultation head, thus forming a complete set of devices with five different conversion modes to meet various needs: A. The two-sided flat head is used to detect low-frequency heart sounds, dilatational and third heart sounds, as well as first and second heart sounds. A high-pitched murmur (hum) from the heart can also be detected. Small face can detect the natural heart sounds of children with high sound quality. B. Large bell shaped head can accurately confirm the hearing of low, medium quality heart sounds and hum sounds. C. The middle bell shaped head is concentrated in the narrow area, such as the ribs or other narrow positions, and can be used to diagnose low, middle quality heart sounds and hum sounds. D. Small bell shaped earpiece is suitable for the examination of infants and young children with low and medium sound quality and the hum sound emitted by children, especially sensitive. The heartbeat of the fetus can also be heard. The combination of the above is perfect, and its high sensitivity will allow you to clearly distinguish low and medium frequency sounds, so that you can easily hear the weakest hum noise. Listen to the fetal sound of the dear friends attention: with mechanical stetho we suggest is more than 24 weeks of use yo. It takes 16 to 24 weeks to listen electronically, and it takes a lot of patience to find the right place About shping
Shping and Pack All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.