* Switch between two measurement modes of digital curve at will.

*OLED display clear reading.

*integrated design streamline appearance.

* It has signal strength display function to facilitate users to find measuring points.

*Autocorrelation algorithm 12 weeks can be measured fetal heart rate.

*Adopt the same DSP technology and fetal heart rate algorithm as the fetal monitor to ensure that the monitored fetal heart rate is accurate and reliable.

* Pulse ultrasonic doppler working mode single chip high sensitivity probe 2MHz working frequency ultrasonic dose is far lower than the national safety standard so it is safer to monitor the fetus.

* Two no. 5 (AA) batteries can work continuously and shut down automatically without signal for 1 minute.