Model Number: TX01 Brand Name: Cigii Key Specifications/Special Features: 1.Real-time fetal heart rate display model2.All in one design with integrated probe in main body.3.LED display4.Low battery alarming and battery level indicator5.Working frequency: 2.0MHz±3%6.Comprehensive sensibility: ≥90db7.Space peak sound pressure: 25mW/cm28.Active area of sensitive element in Ultrasonic transducer: 1cm29.Power for ultrasound output: ＜2mW10.Power Source: 2*AAA batteries11.Weight: 72.4g12.Ultrasonic complants requirements: Density＝1.0g/cm2, Speed≤1.7m/s，Impedance ≤1.7×105g/cm2.s, attenuation≤0.02dB/mm
13.Working conditions：Temperature：+5℃ ~　+40℃
RH：<85％
Pressure：86kPa ~ 106kPa 14.Fetal Doppler is fit for 16-week fetus 15. Batteries are not included. 16. Accessories: main body+manual+protection pad