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. Item Type: White Noise Sound Machine Material: Plastic, silicone, electronic components Size: Approx. 74 x 169mm / 2.9 x 6.7in Battery: 3.7V 14500 lithium battery 500mAh (built in) 1 x White Noise Sound Machine 1 x Lanyard 1 x Instruction Manual 1 x Charging Cord