Baby Sleep Aid: Add SoundSleep Rejuvenates rhythmic sounds to your babys sleep routine to help them fall asleep faster and stay asleep longer it makes the perfect baby sound machine and baby registry must-haveWhats in the Box: (1) SoundSleep Rejuvenate White Noise Sleep Machine, (1) Wall Outlet Adapter, (1) User ManualWhite Noise Sound Machine: The SoundSleep Rejuvenate White Noise Sleep Machine includes 6 digitally recorded relaxing sounds designed to mimic the natural environment: White Noise, Thunder, Ocean, Rain, Summer Night, and BrookAuto-Off Timer andamp Volume Controls: Choose to play relaxation sounds on this ambient sound machine continuously or opt for the auto-off timer the timer features 3 options: 15, 30, or 60 minutes adjust the volume with convenient volume control buttonsCompact and Portable: This portable sound machine is lightweight, compact, and easily fits into your purse, bag, or suitcase