Features:
        Pocket Fetal Doppler mainly applies to detect fetal heart rate for fetus of more than twelve weeks;
        BF-500D+ with a blue backlight LCD can display FHR, synchronous FHR signal, battery indicator,
      volume of sound and alarm indicator accurately; designed for darkness use; with automatic dormancy,
    self-detecting, and alarm function to make caution for abnormal FHR and low battery capacity;
        Only 270 g, easy to be carried, built-in speaker;
        2.0 MHz bigger handgrip probe, easy to hold and replaced, ( Waterproof probe for option );
        9 V dry battery and rechargeable Ni-MH batteries can be alternatively applied .
 
Specifications:
       Ultrasonic frequency: 2.0 MHz ± 10% ( C.W.)
FHR display range: 60 -210 BPM (± 2 BPM ) 
FHR alarm range: <100 BPM or >160 BPM 
       Battery: 9V dry battery 
       Maximum audio output intensity: ≤ 1.0 W
       Doppler frequency: 100-3000 Hz
       Static continuous working time: BF-500D ≥ 8 H;  BF-500D+ ≥ 5 H
       Automatic dormancy time limit: 1 minute
 
Normative collocation:
gallus, ( Optional: 9V Ni-MH  rechargeable battery and charger ; 60 g Gel ; portable soft handbag )
 
Packing list :
BF-500D+     20 PCS/CTN       G.W. : 18KG      Size: 44*36*42 CM