CE Medical Baby Heartbeat Monitor Portable Fetal Doppler 

CE Medical Baby Heartbeat Monitor Portable Fetal Doppler Product name: Portable Fetal Doppler Item No.: JT-DS120A Technical Specification LCD Display Dimension: 39*27mm Speaker power:0.5W Power Supply: Built-in rechargeable battery Working Voltage:7.4W Continous Operating time:>5 hours AC recharger Ultrasound: Frequency: 2.0MHz continul wave Intensity:<2mW/cm2of2.0MHz P:<0.35MPa  FHR: Display:LCD display Measurement Range:30BPM-240BPM(BPM/Minute)    Measurement Accuracy:±1% or ±1BPM                                  Dimension: Dimension:330*230*70mm G. Weight:<1.0kgs Power Supply: Power: Built-in Chargeable Battery,DC,7.4V Li-ion battery AC recharger Working Environment: Temperature:+5℃~+40℃ Humidity:&l…