● Easy to use
● Built-in speaker.
● Automatic switch-off.
● Interchangeable probe
● Blue backlight
● Two mode:real-time FHR and average FHR
● Volume indication、battery energy indication、FHR dynamic graph display.
● Sound alarm function when FHR is out of the normal range
● Various battery compatibility:AA alkaline battery and AA Ni-MH rechargeable battery.
● Audio output: can be connected with a recorder to recording sound of fetal heartbeat.Such as: computer,MP3/MP4.
● Two colour for host:blue and pink