12 Soothing Sounds: White Noise, Brown Noise, Pink Noise, Thunderstorm, Rain, Campfire, Shhhh, Tibetan Bowl, Brook, Ocean, Summer Night, and Seaside Ultra-Portable Design: Small and lightweight so it easily fits into your purse, tote, or suitcase; easy to bring your sleep sounds with you wherever you go Millions of Happy Sleepers: Add rhythmic nature noises to your baby’s sleep routine to help them fall asleep faster and stay asleep longer Auto-Off Timer: Play sounds continuously or choose from 3 auto-off timer options: 30, 60, or 90 minutes; plug it into a wall outlet with the AC adapter (included) or use 4 AA batteries (not included) What’s in the Box: (1) Homedics Sleep Better Portable Sound Machine with Night Light, (1) AC Adapter, (1) Quick-Start Guide