Includes 12 snoothing sounds: 10 light music, bird and wave sound. Adjustable volume. 3 timer: 15min, 30min, 60min. Powered by 3pcs AAA batteryNOT included. Easily hang on stroller or simply stand on table top. Smooth and burrfree surface design. Small size and lightweight, portable design. Color: White Grey Material: Plastic electronic components Product Size: 10*6*11cm Power Supply: 3* AAA batteryNot included Timer: 15min, 30min, 60min Cleaning: Gently wipe with wet cloth 1¡¢ 1. White noise sound machine: Help to create a peaceful environment, boost your focus while you study or work, make baby fall asleep faster and completely rested. With 12 soothing sounds and auto-off timer. 2¡¢ 2. 12 soothing sounds: Includes 10 light music, bird and wave sound. All sounds are soothing and mollifying, no jarring noises. Select the sound that you prefer. 3¡¢ 3.Auto-off timer: The auto-off timer can be set for 15, 30, 60 minutes to save energy, no more worry about forgetting to turn off the machine. 4¡¢ 4. Adjustable volume: Adjustable volume control allows you get the sound just right. 5¡¢ 5.Portable size: Small size and lightweight with a silicone strap, perfect for outdoor use, and can be easily attached to baby stroller, or crib. 6¡¢ 1 x Owl Sound Machine 1 x User Manual