fitniv white noise machine with adjustable baby night light for sleeping, 14 high fidelity sleep machine soundtracks, timer and memory feature, plug in, sound machine for baby, adults fitniv specifications: adapter input: 110-240v-50/60hz, adapter output: 5v—1.0a, device working voltage: dc 5v , device working power: note: the white noise machine does not have a built-in battery, a power adapter include for using. package contents: sleeping sound machine * 1, power adapter * 1 , user manual * 1