FETAL DOPPLER NEOSTAR-3 (WIRED) Specification:Ultrasonic Frequency: 5 MHzLCD Size: 36mm*28mmFHR Display range: 50bpm -210bpmDimension:136 mm (W)* 35mm (D)* 105(H) mmWeight:0.25kg (including battery)Continuous work time: ≥8 hours Features:Compact and light, Easy to use, Ergonomic designMain Body and probe separated, WirelessCrystal sound & with high quality loudspeakerWith color displayData memory function can check recordSound alarm function when fetal heart rate is out of the normal rangeAudio Output: Can be used the cable to connect with computer and record the fetal heart sound