? Easy to use

? Accurate FHR detection, FHR displayed with curve and value, advanced in the world

? MaternalSpO2and heart rate is available

? Li-ion battery and battery capacity indicator

? High sensitive ,1MHzor2 Mhz doppler transducer

? Pulsed Doppler operation, advanced in the world.

? Date and time function.

? Long time continuous use ( more than 4 hours)

? Auto power off for energy saving