It is an advanced model with intellectual cancellation of erroneous FHR and transient FHR digital LCD display.

Accurately detect FHR with digital LCD display and built-in speaker to hear sounds

Waterproof probes for parturition under water
Intellectual cancellation of erroneous FHR

Built-in rechargeable battery, automatic recharging safeguard. Charging once for over 6 hour continuous working

U Automatically power off if no signals of FHR received within 2 minutes to save energy