There are two different types of hand-held baby dopplers, regular and digital. We refer to baby dopplers that just give the audio of the fetal heart beat as a regular baby doppler. Typically these baby dopplers are equipped with everything a digital has except the digital display. A digital baby doppler employs a small LCD screen where it provides the fetal heart rate (FHR) during an exam. The digital baby doppler typically has a range between 50-220 bpm. Different manufacturers offer additional information on the baby dopplers small digital screen such as battery life, auto shut-off functions, battery recharging information and other indicators that insure optimal performance.