Thanks to the Luvion Essential, you'll know exactly what's happening in the nursery. This baby monitor has night vision, so you'll always have the best view of the nursery. At night, you can use the VOX function, which turns on the parent unit when your child makes a sound. That's useful, because you won't be bothered by the bright light of the display. Did your child wake up right when you started cooking dinner? You can use the two-way audio or play a lullaby. That way, you can comfort your child from a distance.A baby monitor with an observation camera can be compared to a smartphone that runs out faster when you play a video. That means it has a limited battery life.