<b>Specifications:</b><br> Adapter Input: 100-240V-50/60Hz<br> Adapter Output: 5V—1.5A<br> Device Working Voltage: DC 5V<br> Power: Light 3.8W, Speaker 3W<br> Supported OS: Android 5.0 or higher, iOS 9.0 or higher<br> Supported Wi-Fi Protocol: iEEE802.11 b/g/n 2.4Ghz<br> Note: The white noise machine does not have a built-in battery and comes with a power adapter for use.<br> <b>Package Includes:</b><br> 1 × sound machine<br> 1 × Power Adapter<br> 1 × USB Power Cord<br> 1 × User Manual<br>