H10-1 pocket fetal doppler It's used for detecting the fetal heart rate(fhr) at hospital, clinic, family. Easy to use Without lcd display Built-in speaker Audio output Automatic switch-off Multi-colour of main Specification: Ultrasonic frequency: 2.5 mhz Dimensionú¦100(l)* 30(w)* 135(h)mm Weight : 0.5kg Continuous work time: 8 hours
