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Reviewers note it’s nearly half the price of the Hatch portable sound machine but just as effective.

Lourdes Avila Uribe is a senior staff writer at HuffPost covering shopping trends, lifestyle and new products.

There’s something about the particular sound quality of this popular and highly-rated noise machine that is incredibly soothing. I am now utterly dependent on it for a good night’s sleep — and it comes in especially handy when I’m traveling or when there’s a racket outside that needs to be drowned out.

This powerful little machine has three different sounds to choose from: bright white noise, deep white noise or gentle ocean waves. The adjustable volume makes it possible to block out noise and disruptions, which is convenient in the evenings when my wife and I want to watch an hour of television while the baby sleeps before inevitably falling asleep on the couch and during those early mornings when one of us is trying to sleep in while the other entertains the world’s loudest child.

It can also emit a soft amber LED night light when you need it and is designed with a small, compact silhouette that can be slipped into a diaper or travel bag with ease. I literally won’t go anywhere without it. During the day, one is clipped to my baby’s stroller and is powerful enough to keep him asleep while wandering around the busy streets of NYC or while riding a noisy subway.

The USB charger makes it a breeze to keep the battery loaded and avert a midnight crisis. I have found that charging it for just over an hour will power it for 12-16 hours. It really is the best option of all the white noise machines out there, portable or not.

“Definitely 5 stars!!! I bought one for myself a couple years ago and it still works perfectly today. So I ordered a second one for my son’s room. 3 different sounds and volume options. I love that it charges, I usually just leave it plugged in but if I need to plug something else in and forget to plug it back it, it still lasts all night. I use to sleep with a fan for noise but I’m a colder person and got tired of needed to bring a fan on vac. This is the perfect size for your night stand or traveling. It’s very light weight and doesn’t take up much room. 100% would recommend.” —Roci

“Best sleep in weeks. This really worked for me, easy to use, no batteries to change, perfect size and portable! The white noise mode lulls me to sleep and helps me stay asleep! I’m only sorry it took me so long to buy this” —J. Williamson

“I purchased this for myself because I have a hard time quieting my mind when I go to bed. I use this on the first setting (white noise) or the second setting (ocean). It does what I need it to in that it helps me quiet my mind. I usually let it run all night and can go two or three nights before it needs charging again. It would last much longer if you were just using for a short period of time but there is no self-timer or auto shut-off. Perfect for parents using it to get the kids to sleep. At $20, I feel this is an incredible value. It has several levels of volume and can get pretty loud if you need it to. If you’re looking for a portable white noise machine, you’ve found it! 5/5” —TypeA

“Tiny but mighty. Bought to use in RV to reduce sounds inside (snoring) and outside. Has three sound options, a lock to lock volume, and a power button. Volume is adjustable and can get pretty loud.” —SAHM

“I love this little sound machine! We clip this to our baby’s car seat/stroller when we’re out and about and have the white noise playing, and he loves it. He sleeps through just about anything as this offers soothing, ambient noise for him. We also clip it to his bassinet during nap times at home, and that works really well too. It’s rechargeable, and the battery lasts for hours. It’s similar to the Hatch portable sound machine, but half the price so I think it’s a great alternative. I would definitely purchase this again!” — Amazon customer