Fetal Doppler BT-200
(6 reviews)* Display :LCD Low Battery Display ,Signal Quality Display
* Audio Auto Shut-Off : 5 minutes
* Heart Rate Range : FHR Accuracy +/- 2% of Range
* Auto Shut-Off Signal : 1 minute
* Ultrasound Frequency : 2 MHz
* Power : 2 x 1.5V AA Batteries
* Ultrasound Intensity : * Sensitivity : 16 weeks onwards
* Speaker Output power : 1.2 W Built in Loudspeaker
* PC Interface :Sound Card