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 & 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