HIGH QUALITY MATERIALS: This sleep sound machine is made of high quality ABS and silicone, safe for babies, children and pets, especially suitable for babies and children, it can quickly calm babies and children, increase their sense of security, stop them from crying, and make them fall asleep quickly, effectively improve their sleep quality and promote healthy development. WHITE NOISE: This baby sleep aid provides 10 soothing sounds such as ocean waves, birds chirping, rain, lullabies, etc. It is suitable for babies, children and adults of all ages, and can easily drown out traffic noise in the morning, noisy neighbours in the evening and barking dogs in the night, and effectively reduces noise disturbances. MULTIFUNCTIONALITY: This sleep machine has six different light colours to choose from: blue, green, orange, blue+red, green+blue, green+blue+orange, which can be used as a night light to create the perfect environment for rest and relaxation, and slow, soothing light can also be helpful for sleep. LONG LASTING BATTERY LIFE: This white noise machine is powered by three AA batteries (not included), which can last up to five days, and has the function of automatic switch-off after half an hour of inactivity, which effectively reduces energy consumption and improves battery life. You can take it anywhere and use it without charging! PERFECT GIFT: This portable sound machine creates a cosy, womb-like sleep environment that quickly calms babies, soothes them to sleep and ensures they can stay that way, making it the most trusted tool for parents of sleep-deprived newborns and a must-have newborn gift!