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: ??* Pocket Doppler ??* Big LCD display FHR ??* Backlight ,Built-in speaker ??* Audio output can connect recorder ??* Automatic switch-off ??* Three FHR modes:curve display mode?numeric display mode ??* Battery energy Indication and Volume Indication ??* Sound alarm function when FHR is not the normal range ??* Manu data set mode. Specification: ??* Ultrasonic Frequency:2.5 MHz ??* LCD size:55mm X 27mm ??* FHR display range:30~240 BPM ??* Dimension:14 0 mm (W) x 33 mm (D) x 88 mm (H) ??* Weight:0.54kg ??* Continuous work time:? 10 hours Option:Gel,earphone,bag Standard accessories:3.6V rechargeable battery,Charger,Manual Packing: ??Quantity:20pcs /carton ??Dimension:45*36*40cm /carton ??N.W.:15kg ??G.W.:18kg