Home pocket fetal doppler(lcd display) Fetal doppler is used for detect the fetal heart rate ( fhr ) to hear the sound of 12 weeks pregnancy in hospital, clinic even at home. Features: Compact and light , easy to use, ergonomic design All in one design, the probe and main units integrated togather High sensitive doppler probe Heart rate display (lcd) Automatic display fhr after remove from the body Heart rate range 50-210 bpm Two audio output can connect two earphone, speaker or computer Specification: Ultrasonic frequency: 2.5 mhz Dimensionú¦50(w)* 34(d)* 110(h)mm Power supply: 1. 5v battery x 2 (type: aaa) Continuous work time:í² 8 hours Pc interface cable Standard accessories: earphone íórecording cable íóinstruction manual Ultrasonic frequency: 2.5 mhz Dimensionú¦50(w)* 34(d)* 110(h)mm Power supply: 1. 5v battery x 2 (type: aaa) Continuous work time:í² 8 hours Pc interface cable