<p>The SweetieSong EZD-100ST Fetal Doppler lets you listen to and record your baby's heartbeat at home as early as 12 weeks into your pregnancy!</p><br> <p>This 3mhz doppler is easy to use with a 3 button display: choice of mode, power button, and backlit display option. The doppler has a built in speaker with fantastic audio quality. You can save these sweet first memories with your own recorder with audio input from this doppler. </p><br> <p>The doppler has 3 working modes including: real time FHR display mode, averaged FHR display mode (an average of 8 FHR- fetal heart rate beats), and manual mode (counts average FHR beats based on the calculating time you choose. The backlit display option lets you see the FHR even in dim lighting.</p><br> <b><p>Test Specifications</p></b> <p>Fetal Doppler Unit</p> <p>3 mhz Probe</p> <p>Instruction Manual</p> <p>FREE tube of Gel</p> <p>2 AA Batteries </p>