Features 9 Different Music Choices: Running Water, Raining, White Noise, Ocean Waves, Crickets, Birds, Lullaby (Three) Compact And Convenient: The White Noise Recorder Is Compact, Light Weight, And Includes a Lanyard So You Can Take It Anywhere. Remarkable Effect: It Can Effectively Improve The Quality Of Sleep. The Natural Sound Controlled By The Volume Can Help Adults, Children And Babies Fall Asleep Faster And Stay Asleep Longer To Get a Healthy Rest. Easy To Use: With An Auto-Off Sleep Timer, You Can Set a Timing Option (15 Minutes, 30 Minutes, Or 60 Minutes) For Playing The Sound And Using The Luminous Function. Comes With a Usb Charging Cable For Easy Charging. High Quality Assurance: Both The Us Fcc And The Eu Ce Certification, The Quality Is Trustworthy.