What's this Roffie white noise sleep machine can bring to you? Roffie brand is committed to providing the best products and the most considerate service. 1) Help your baby have a restful sleep. 2) Create a peaceful environment, comfortable sleep helper, white noise background. 3) Mask unwanted noise, enjoy your private space. Notes: The white noise machine does not have a built-in battery, a power adapter include for using. Please charge the machine for 30 minutes before using it. Please keep it away from dust and water. And Wipe off dust with a damp cloth. SPECIFICATIONS: Item size: 6.2 x 6 x 3.2 Package weight: 14.4 ounces Package Contents: Model: N300 Color: White 1 × Sleeping Sound Machine 1 × USB Cable 1 × User Manual Roffie White Noise Sound Machine for Sleeping & Relaxation.