Safety 1st brings ultra clear audio monitoring to parents with the glow and go duo monitoring system, now available in a pretty pink that will add a splash of cheerful color to your home. As your baby travels through the busy day, so does the glow and go monitoring system. From nursery to playroom to kitchen, there's no need to plug and unplug over and over again. Just set the portable unit near your baby and see and hear your baby's sounds on your portable receiver from over 400 feet away. These adapters draw energy only when units are on. Other adapters drain power even when units are off or detached. Better for the environment and your wallet.