Doppler with free gel is available in Baby Monitors

Small beautiful appearance, super aerodynamic design; strong ability of processing fetal heart sounds signals(much stronger than the third generation), invulnerable to outside interference: isolation of probe and host, small and humane design, which are more convenient to find the place of the fetal heart. The host embedded rock can achieve many people listen the fetal heart sounds at the same time instead of using the external accessories. The design of using LCD to show fetal heart rate makes reading the fetal heart rate more conveniently and getting rid of the troubles from manual calculation.