About the product: White Noise Machine: Help create a peaceful environment, boost your concentration while you study or work, make baby fall asleep faster and fully rested. With 12 soothing sounds and automatic shut-off timer.12 Soothing Sounds: Includes 10 light music, bird and wave sounds. All sounds are soothing and soothing, no harsh noises. Select the sound you prefer. Auto-off timer: Auto-off timer can be set to 15, 30, 60 minutes to save energy, never worry about forgetting to turn off the machine. Adjustable Volume: Adjustable volume control lets you get the sound just right. Portable Size: Small size and lightweight with a silicone strap, perfect for outdoor use, and can be easily attached to stroller or crib. Features: Includes 12 sleep sounds: 10 light music, bird and wave sound; Adjustable volume 3 timers: 15min, 30min, 60min Powered by 3 AAA batteries (not included) Easily hang on the stroller or just lay on the table Smooth, burr-free surface design Small size and lightweight and portable design Weight190g Specification: Color: White + Gray Material: plastic + electronic components Product size: 10x6x11 cm Power supply: 3 AAA batteries (NOT INCLUDED) Timer: 15 min, 30 min, 60 min Recommended age: 0+ Cleaning: wipe gently with a damp cloth