The Big Red Rooster White Noise Sound Machine has 6 sounds including: rain, brook, ocean, thunder, white noise and summer night. The sound machine sleep sounds help you fall asleep easier, sleep better, wake-up refreshed. The white noise sound machine is perfect for blocking out the sound of noisy neighbors, barking dogs and snoring. It also helps with tinnitus. The sounds mask conversations making it perfect for office privacy and is also great for travel! Use the sound machine for adults, kids or a baby. Leave the sound on all night or use the optional timer that can be set for 15, 30 or 60 minutes. It is powered by an AC adapter (included) or 3 AA batteries. Measures 4 inches deep x 4.375 inches wide x 2.63 inches tall.