Get the best sleep possible with the Dreamlight Rechargeable Sleep Mask. Using light technology, Dreamlight helps you sleep and experience optimal rest. It tracks and analyzes your sleep patterns each time you use it. As a sleeping mask, Dreamlight eliminates any light leakage. It also provides ambient sounds of nature to help you fall into a deep sleep. You can use the associated app to select your favorite music and play it through the Bluetooth speakers.