1. Type: 2. Name : GMT-302 Fetal Doppler FHR Detector 3. Function : It can detect the Fetal heart,LCD display FHR, it's used for detecting the fetal heart at hospital,clinic,family. 4. Technology : Ultrasonic frequency :2.5MHz + - 10% Power :9.6v rechargeable battery Ultrasonic intensity : < =10mW/cm2 Work time:> = 6hours 5. Unit: size: 20.0cm*16.5cm *6.5cm 6. Packaging: gross weight: 13.5kg(20pse) size:45cm*35.5cm*35.5cm 7. Minimum ordering: 8. Production cycle: 9. Price: 10.Disposition: charger,gallus,manual