Ceramic & Rope Ultrasonic Aroma Diffuser SHOP ALL RETAIL The opening in the back

The opening in the back is 4

Indicator light on the back lets you know when it is on or off

When using the Obsidian Ultrasonic Aroma Diffuser use 100% pure essential oils

fitting in well with any home décor style from modern to coastal

Ceramic & Rope Ultrasonic Aroma Diffuser SHOP ALL RETAIL The opening in the backCeramic & Rope Ultrasonic Aroma Diffuser DESIGN: An artisan's touch, this diffuser has a creamy eggshell finish wrapped in real rope. LIGHTS: Choose between 8 LED Light colors for a single color glow, or allow light to effortlessly rotate between all colors. Set to fit your mood, holiday or decor! MIST SETTINGS: Features 2 mist settings. Intermittent, which lasts for 8 hours, and Continual, which lasts for 4 hours. Both with automatically shut off