3.0Mhz probe,all to one design;9V battery;record the fetal hear rate through a recording label;detect above 16 weeks fetal heartbeat,with some gel,water or oil on the probe.
Can detect baby’s heartbeat from 12-16 weeks
Lightweight & portable for convenience
Dosage under 50% of the national ultrasonic power standard
Battery life of 500 minutes with new alkaline batteries (Takes 9V batteries)
Comes with headset & volume control to hear your babys heartbeat
Can record babys heartbeat onto computer
Working indicator light to show working condition