The VTech DM221 Digital Audio Baby Monitor is a portable baby monitor that operates on 2.4GHz WiFi frequency. It features a digital display and a lullaby function, making it an essential tool for monitoring and soothing your baby remotely. With its reliable brand reputation and quality features, this baby monitor provides peace of mind for parents looking to keep a close eye on their little one while they are sleeping or away from their baby. Pre-owned comes with the two monitors, cords and instruction manual.