eufy Security applies its home monitoring expertise to the nursery with the Baby Smart Sock. This device shifts the focus from simple audio to direct physiological tracking, measuring your baby’s heart rate and oxygen levels through a wearable sock.

The soft nylon sock fits on either foot and transmits data to a connected hub. You get a clear, real-time readout on your phone. The 24-hour battery life means you can reliably track through the night and into the next day. Customizable alerts notify you of significant vital changes or if the sock comes loose, aiming to reduce false alarms from mere movement.

Daily sleep reports offer useful trends over time. It’s important to note this is a consumer wellness monitor, not a medical device. The sock requires daily charging, so establishing a routine—like charging during a morning tummy time—is key for uninterrupted use.