Bistos BT-220 Color Fetal Doppler (Hi-Bebe BT-220C) is a pocket-size fetal Doppler with a 2.4–3.2 inch color TFT LCD, displaying fetal heart rate numerically and as a graph with clear built-in speaker sound. The device uses a high-sensitivity 2 or 3 MHz waterproof probe to detect fetal heart rate typically from around 10–12 weeks of pregnancy, with a heart rate detection range approximately 30–240 bpm on the color model.
2.4–3.2 inch color TFT LCD displaying fetal heart rate number and graph.
High-sensitivity 2 MHz or 3 MHz interchangeable waterproof Doppler probe.
Pocket-size, lightweight design for easy handheld use in clinics and home settings.
Built-in speaker and earphone jack for clear fetal heart sound monitoring.
Acoustic stimulator function to help obtain a more stable and accurate fetal heart rate signal.
Heart rate counting range around 30–240 bpm on BT‑220C, suitable for antepartum testing.
Low power consumption with long operating time; supports disposable batteries and some versions support rechargeable options.
