... operate Cherish Life, Keep HealthHome Use Fetal Heart Detector JPDS100 AngelSounds Serias Doppler Angelsounds Angelsounds fetal ... small beautiful appearance, strong ablility of processing fetal heart signals, invulnerable to outside interface.Specification:Utrasound frequency ... Plug the recording cable into your PC and your Fetal Heart Detector Device2) Select: Programs3) Select: Accessories4) Select: ...