?COMPACT BUT POWERFUL?- White noise machine has more skills. Designed for all things sleep, this sound machine comes with favorable features: rechargeable battery, 25 soothing sounds, customized timers, various volume levels, child-lock for safety, and even memory functions! It is not only a sleep soother sound machine for baby kids, but also an effective white noise machine for adults sleeping relaxation. ?Large battery, longer battery life?- The Portable Sound Machine is equipped with a newly upgraded long-lasting battery. Compared to other 500mAh batteries, this portable speaker uses an unparalleled 1500mAh battery. With just one charge, you can easily take a nap at night and during the day. The battery is built-in (with charging cable), so there is no need to purchase an additional battery. ?Portable White Noise Machine?-Just 3.15"x2.17"x0.87" portable sound machine is a essentials gifts for road trip traveling, stroller attachment. Light weight, simple to use, our white noise fits easily in your pocket and you can carry it anywhere. ?Travel Mini Wireless Speaker?Our white noise machine can be switched to wireless speaker mode(Small Body has a lot of Power). Only need to link your phone and enjoy the music immediately, which adding unlimited fun for your trip. ?Effectively Masks Noise?Built-in sound quality upgraded speakers effectively eliminate disturbing or distracting noises, improving sleep and soothing emotions, helping the whole family get more sleep. No need to download the app.