【Non circular soothing sound】: This noise machine has 16 natural sound effects, including white noise, lullaby, running water, rain, birds, bonfire, etc. The white noise machine provides you with more choices to help you fall asleep faster and feel refreshed when you wake up. This white noise sleep machine is suitable for adults, infants and the elderly. 【High fidelity sound and 36 level volume】: High fidelity sound has no breakpoint, allowing the stereo to provide a more real experience; 66mm 16 core large-diameter loudspeaker is used, with audio power up to 100DB, and the sound is very loud enough to drown barking, traffic, snoring, etc. In addition, the sound machine baby has 36 levels of volume adjustment, which can be adjusted to the appropriate volume according to your sleeping environment. 【Memory function and timer】: adult white noise machine can intelligently remember user habits. You just need to press the close button when you wake up and the open button when you are ready to sleep. It will keep the same scene sound and volume settings, so you don't have to reset the timer, volume, sound and night light settings every time; Physical switch, sliding can set 30 minutes, 60 minutes or cycle playback. You can select the appropriate timing mode according to your sleep time. 【Night light and simple button】：The sleep breathing night light has two different brightness. You can adjust according to your needs, and the sensitive touch design can avoid disturbing your family. The sound machine can provide enough brightness to feed a baby, change diapers or get up at night without tripping. Single function button, which makes it easier to switch and select appropriate sound and volume adjustment. 【Portable and packaging】: The size of the EqiEch white noise machine is 9*9*5.2cm, and the weight is only 0.196kg , so it is small and light, and can be easily put into your bag or suitcase. Noisy machines are powered by AC or USB ports, such as adapters, power packs, laptops, etc. You can take the portable sound machine anywhere, which is very suitable for travel, home and office.