This White Noise Machine by i-Star is a portable sleep sound machine featuring 6 natural sounds: White Noise, Rainfall, Ocean Waves, Running Brook, Fan, and Hairdryer. It's designed to aid sleep for babies and adults, soothe agitated babies with womb-like sounds, and provide tinnitus relief. The machine includes an adjustable sleep timer with 15, 30, or 60-minute options, or can play continuously. Its compact and lightweight design makes it ideal for travel, powered by a Micro USB cable or 3 x AA batteries (not included). It also has an AUX output for headphone use. This product is from a British company, i-Star, and complies with CE and FCC standards.