Sonotech Express Fetal Doppler

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Chris Chung
Product Specialist

2555 7778

There are a lot of similar products, why should we choose Sonotech Express?

Cost does say the difference! Sonotech Express is a product of a Medical Equipment Manufacturer. Although Sonotech Express has been marketed as a consumer-grade product, its quality has achieved the highest standard at its level

You can use hand cream and baby oil as conduction media, a much convenient feature

Comparison table of "similar" products
Brand	Meditech	JumpXX	BebeSXXXXXs	Hi BeBX
Model	Sonotech Express	AngelsouXX Top model	PrenatXX hearX listXXXX	BT2XX
Medical equipment manufacturer?	Yes	No	No	No
Made in	PR China	PR China	PR China	?PR China
Distributed by a medical equipment supplier?	Yes! We are the supplier of the Hospital Authority since 2006	No	No	No
Ultrasound frequency	2MHz	3.3MHz	Unknown	2MHz
Ultrasound dosage	10mW/c㎡	20mW/c㎡	Unknown	10mW/c㎡
FHR display?	Yes	Yes	No	Yes
All-in-one design?	Yes	No	No	No
Size	110x55x17mm	250x240x80mm	~200x200x80mm	Pocket size
Weight	80g	370g	不知	~500g
FHR Detectable range	50 to 240bpm	Unknown	Unknown	50 to 240bpm
Sensitivity	≥90dB	Unknown	Unknown	Unknown
Error	< ± 2%	Unknown	Unknown	< ± 2%
Audio output	2 outputs	1 output	2	1 output
Low energy consumption?	Two 3A batteries can last for 6 hours	Four 3A batteries. Not know how long it last	9V battery. Not know how long it last	Two 3A batteries can last for 6 hours
Post-sale warranty	1 Year	Need to bring back to Shengzhen factory by yourself	Unknown	Unknown
Price	$750	$690 (unofficial online seller)	$560 (ebay, unofficial online seller)	$1200 (ebay, unofficial online seller)

What the wisdom says,

"Cost speaks for the quality!"

Reference

What is the different between a fetal doppler using 2MHz versus 3MHz？
Most fetal doppler scanner adopt a ultrasonic wave with a frequency of 2 or 3MHz. 2MHz can penetrate much deeper than 3MHz (3-5cm versus 1-2cm). Therefore a 2MHz scanner can pick up fetal heart signal much readily.
- Higher the frequncy, the shorter the wavelenght
- Lower the frequency, the longer the wavelenght will be
Most retrospective reviews support 2MHz scanner is the frequency of choice. When used to sample heart signal on 8th week gestation fetus, 2MHz scanner can pick up 80% more cases than 3MHz scanner. The difference is more obvious when subjects are overweight.

Food and Drug Administration (FDA) marks the safety level of ultrasound dosage being 97mW/c㎡(Isata). The lower will be the safer, but requires a much sensitive machine to pick up

Medical equipment manufacturer will provide technical specification as their usual practice

中文版本

Sonotech Express Fetal Doppler

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