Feature:1. 10 LEVELS VOLUME ADJUSTABLE: White noise sound machine offers 10 different volume levels, allowing you to customize the sound to suit your baby needs and help them relax and fall asleep.2. SOFT COLOR LIGHT: The gentle and soothing colorful light can be freely switched, creating a warm and comforting sleep environment for your baby, promoting better sleep and relaxation.3. MULTI SOUND EFFECTS: With 28 different sleep sounds, including 10 lullabies, 10 nature sounds, and 8 interactive melodies, this sound machine provides a variety of options to soothe and calm your baby.4. RECHARGEABLE: With a built in 3.7V 14500 lithium battery, this sound machine is rechargeable and can provide continuous use. No need to worry about replacing batteries.5. 3 TIMER SETTINGS: Sound machine offers multiple timer settings, including 15 minutes, 30 minutes, 60 minutes, or continuous loop play. You can set the timer according to your preferred duration.Specification:Item Type: White Noise Sound MachineMaterial: Plastic, silicone, electronic componentsSize: Approx. 74 x 169mm / 2.9 x 6.7inBattery: 3.7V 14500 lithium battery 500mAh (built in).Package List:1 x White Noise Sound Machine1 x Lanyard1 x Instruction Manual1 x Charging Cord