Essential Oil Diffuser with 500 ml tank diffuses for up to 14 hours continuous. 7 color LED light changes color automatically or leave it on one color, or even turn it off all together. Add 10 drops of essential oil and enjoy! Adjust mist output from low or high. Control all of the functions from the convenient app on your phone (Wi-Fi Capable). Perfect gift for family members and friends who love great aromas or need aromatherapy) healing.