This has many Features including BSNF-100 Best choice of obstetric devices, triad with FHR,SpO2 and NIBP, one - time measurement,convenient, simple and easy for operation, Testing FHR,SpO2 and NIBP together, LED high light display SpO2, NIBP and FHR etc, Modular design,convenient for updating and expansion of the software and hardware, Humanization designed interface ,easy operation, convenient and intuitive working status, High quality louds peaker with clear and sonorous sound, Vascular probe and real time printing function for option, and With rechargeable battery, working 6 hours. Specifications: FHR, Working frequency: 2.0MHz ± 10%, Signal processing: Special digital signal processing unit, Measurement range: 50 -210bpm ?±2bpm) NIBP, Measurement range: 30- 280mmHg( 4- 37kPa), Measurement accuracy: ± 3mmHg?±0.4kPa), SpO2, Measurement range:0- 99%, Measurement accuracy: 70%- 99%±2 %; 50%- 69% ±3 %.