Instructions Baby Sound B Pocket Fetal Doppler is a hand held equipment for detecting Fetal Heart Rate(FHR) which is specially designed for family of pregnant women to conduct daily detection of FHR by themselves. Pregnant women can operate by themselves to hear fetal heart sound and calculate FHR to realize the purpose of pre-monitoring and fetus caring.Baby Sound B is a high performance model with LCD digital display. Main Features ■ The probe and main units integrated together ■ Delicate and compact design, portable to use ■ Particular 2 Headphone Sockets design can let expectant mother and father hear the fetal heart sound together ■ High sensitive doppler probe ■ Low ultrasound output intensity, much lower than the relative government standard and with high safe quality ■ Low power consumption, two AAA size batteries can last more than 8 hours for continuous use (depend on battery type and volume) ■ Can be connected to a computer or recorder to record the fetal heart sound with recording cable ■ LCD FHR Display with high accuracy ■ Screen will be locked automatically without signal for 15s, which is convenient for pregnant women to operate individually Main performance Anti-electroshock Type: Internally powered equipment Anti-electroshock Degree: Type B applied part LCD Display:25 mm×14 mm FHR Measuring Range: 50 - 240 BPM (BPM: beat per minute) Resolution:1 BPM Accuracy:±2 BPM Power Consumption:< 0.8 W Voltage:DC 3.0 V Power Supply: TWO 1.5V(AAA size)alkaline battery Suitable Using Range: Suitable for use after the 12th week of pregnancy Probe: Nominal Frequency: 2.0 MHz Working Frequency: 2.0 MHz±10% Ultrasound Output Power: P < 10 mW Ultrasonic Output Intensity:Isata < 5 mW/cm2 Working Mode: Continuous wave Doppler Effective Radiating Area of Transducer: 208 mm2±15% Physical Characteristic Dimension:(L)110mm × (W)55mm × (H )16.8mm (the space between probe culmination and upper panel is 26mm) Weight: About 80g (including batteries) Qualification Passed FDA and CE