This is the cordless, rechargeable sleep therapy soother that helps calm mind and body for a deep, restorative sleep. Recommended by Dr. Michael Breus, a Diplomate of the American Board of Sleep Medicine and Fellow of The American Academy of Sleep Medicine, the soother uses sound, light and breathing guidance to induce a state of relaxation. Fifteen white noise and nature soundtracks, such as Air, Focus, and Storm help you tune out disruptive noises. The 4-7-8 Breathing Coach employs breath control techniques used in yoga. Five LED light therapy modes allow you to set different colors, use the soother as a nightlight, or simply keep the light off. A built-in sleep timer provides settings from two to 90 minutes. Also connects to a smartphone via Bluetooth for use as a portable speaker. A full charge via USB/AC adapter provides nine hours of power. 5 1/4" H x 3 3/4" diameter. (1 lb.)