Suzy 

6 Soothing melodies.  Play soothing melodies while dropping off to sleep: shushing, heartbeat sound or white noise. These sounds mimic the sound from the womb and will calm them down and stop them from crying. A doctor proven technique.

Auto shut-off.  The sound will automatically shut off after 20 minutes.

Cry sensor.   The sound will automatically activate when your baby starts crying.

Choose your own volume.  Set the volume to your preferred level.

Attach to the crib.   Can be attached to the crib.