[High loyalty and 24 soothing sound] This noise machine has an ultra -large, high -quality speaker to make the fan machine feel an immersive and quickly fall asleep. Fan sound, white noise, pink noise and brown noise, including 12 fan sounds and 12 ambient noise types. Babies are overwhelmed by faces, places and more stimuli every day. White noise can reduce your 's stress and help your fall asleep. [Sensitive audio control]: Press the volume control button in this white noise machine to set the volume level for a personalized sound environment to the desired level. Sound control is low enough, it is suitable for you to make a deep confectionery without disturbing others in the office after lunch. If sound control is large enough, it can cause a masking effect by preventing sudden changes in noise. For example: snoring, dog barking or a truck that comes down the street. Large speaker: soft and full sound. High loyalty for sounds, long -lasting and stable exit. Approximately: 245G (speaker) / 400g (product) = 61.25 %. Compact and convenient: 2 USB charging port and power supply support AC or USB. It can be transported for home and travel. For your environment, set the perfect level anytime, anywhere. Timer and Sound Control: 15, 30, 60 minutes, even all night. Choose an excellent sound and time setting according to environment and sleep habits.