Portable Car Diffuser: Similar size as a soda cup perfectly fit for any car cup holder and easily refresh air or maintain moisture in vehicle office home travel etc.</br>Auto Turn off Intelligently and Safely: Automatically shut-off when the water approach to minimum water level.</br>2 Mist Modes: Continuous mist mode(About 2.5 hours work time) & intermittent mist mode in each 30 seconds(About 5.5 hours work time).</br>2 LED Modes: 7 color of LED lights changing or fix on one color you want. Or turn off the lights.</br>Fit for many kinds of USB Power Source: Standard car power cord/adaptor power bank computer USB cord or cell phone charger. It is portable enough to place it in anywhere.</br></br>Product Description</br></br><b>Warranty</b> <br>Worry-free 12-month warranty. If there is something wrong with the diffuser you can contact the customer service in anytime <br><br><b>Feature</b> <br>" A tough office day or a long car travel may make you tire. This moment you need this diffuser and a few drops favorite essential oil to cheer up yourself. <br>" A good diffuser and specific essential oil can be helpful for sleeplessness?? cough and sinuses etc. <br>? Portable design fit for many occasion. Office?? bedroom?? hotel room or the spa room are the ideal occasions. Especially it can be powered by the power bank. <br>? Ultrasonic technique diffuses cool mist without any heat and noisy. <br>? It is also a perfect gift for your friends or partner. <br><br><b>Simple to use</b> <br>1. Take off the top cover from the main body. Fill with ordinary tap water. Add 2-3 drops of essential oil into the water. Replace top