1.       High sensitivity
2.       Low ultrasound power
3.       Easy to carry and operate
4.       Double probes
5.       Two kinds of charge mode
6.       Built-in double loudspeaker
7.       Suitable for 9 weeks fetus
8.       12 hours battery
9.       Waterproof probe
10.   High light LED display

Suitable fetus	After 9 weeks
Ultrasonic frequency	3.3/2.2 MHz ±3%
Ultrasonic intensity	<2.5mW/cm2
Power supply	AC 220V 50Hz   DC 18V
Machine dimension (mm)	240*160*115
Working temperature (℃)	5~40
Working humidity	0~85%
Net weight (Kg)	Host : 1.12  Charger : 0.64
FHR range (bpm)	60~210
Rechargeable battery	1100 mA (12 hours)