The probe is large, sensitive, 0 radiation, easy to measure. Large-screen LCD display reading more clearly. Large-screen liquid crystal display, so that pregnant women with poor eyesight can also look directly at their own fetal heart rate data, ease of reading more peace of mind. Fetal health, at any time. Small and portable. Specification: Safety standard: IEC60601/GB9706.1 Display: LCD Screen Accuracy: ±2 bpm Measurement Range: 50~210 bpm Frequency: 3.0 MHz(2.0 MHz or 2.5 MHz optional) Speaker: Adjustable Volume Color: Pink / Gray / Cyan / Blue How to use : Before using it for the first time, make sure 2 batteries are in. Press the power button to power on, then adjust the volume. Lie flat with a cushion pillow, keep legs straight and relax. Attach the probe to the abdomen to locate the position and find out the best direction to the heart. After hearing regular heart sound, the FHR value will display on the screen in real time. Package: 1 x Main Monitor 1 x Ultrasonic Transducer 1 x User Manual

Lightweight and Portable Built-in: Speaker with volume control, on / off switch, volume control, headphones and speaker are all doable. Easy and Convenient to Use: With large backlit LCD screen, high fidelity, clear sound. Nice sound: Listening to your baby's sounds is like music to a mother's ears.