Baby Heart Doppler Sonotrax-B Pocket Fetal Doppler (LCD Display with BackLight) Sonotrax handheld Doppler can meet routine examination requirement of obstetricians, midwives, pregnant women and vascular. It is a high performance model with FHR digital LCD display. It has three heart rate processing modes: real-time FHR display mode, averaged FHR display mode and manual mode. It has audio output, and can connect with earphone or recorder with audio input. Sonotrax has a slim, power saving and interchangeable ultrasound probe. Feature: 1. Easy to use 2. 2 AA Size Batteries 3.Accurate FHR detection and LCD display 4.Auto and manual counting 5.Built-in speaker 6. Automatic switch-off 7. Battery energy indication Function: FHR Detection: Speaker output/Earphone output LCD display, Five working modes: Real-time FHR Display mode, Averaged FHR Display mode, Manual mode, continuous operation time>=15 hours Option: 2 MHz Waterproof Obstetrical Probe 3 MHz Obstetrical Probe 4 MHz Vascular Probe 8 MHz Vascular Probe Fetal Doppler is a safe and easy to use device that has been specially designed for use at home, allowing pregnant women to listen to their unborn baby's heart beat, movements and hiccups from as early as 10 to12 weeks. It is suitable for expectant mother to carry out regular checks on her baby in between routine hospital checks. It can not only reduce the expectant mothers anxiety but also allow other members of the family to listen to the baby heartbeat. This portable device is also suitable for obstetricians, midwives and pregnant women. It can connect to a computer, CD or Type to record the baby heart sound and share your babys heart beat with family and friends via email.