Sleepbox Portable Sound Machine Review

Sleepbox Portable Sound Machine Review

This is the next installment in my white noise machine test and review series. The Sleepbox is a budget sound machine and one of the few white noise machines with a removable (!) rechargeable battery.  With a weight of only 5.4 oz (152 g) and a small housing (4.3×4.3×1.4 inches) it is very portable indeed. …

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