The OLS150 Sound Machine is an all-in-one solution for creating a soothing nursery environment. With its unique finger sensor, parents and guardians can record their own heartbeat to replicate the comforting sound that babies hear inside the womb. Additionally, the device offers a selection of 20 soothing sounds, including lullabies, white noise, heartbeat and nature sounds. The multi-colour night light further adds to the calming atmosphere, helping your child relax as they drift off to sleep.