Detailed Product Description
Features: 1) It is an advanced model with intellectual cancellation of erroneous FHR and transient FHR digital LCD display 2) Accurately detect FHR with digital LCD display and build-in speaker to hear sounds 3) Intellectual cancellation of erroneous FHR 4) Built-in rechargeable battery, automatic recharging safeguard 5) Charging once for over 6 hours, continuous working 6) Automatically power off if there are no signals of FHR received within 2 minutes to save energy
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