Baby Heart Rate Detection Instrument Baby Heart Instrument Monitoring Household Pregnant Prenatal Baby Heart Rate Detector

Description

* Need to prepare medicalultrasonic couplant by yourself

* Probe frequency:3.0 MHz plusmn10%

* Error range:plusmn 2bpm

* Rate display range:30-240bpm

* Validity period:5 years

* Size: Length 5.12* Width 3.94 * Height 1.42 inch

* Weight:250g

* Battery:2*AA ( battery without )

* Imported