Upgraded Cold Air Diffusion Technology: Unlike ordinary ultrasonic essential oil diffuser on the market, our waterless car diffuser adopts the lastest cold air diffusion technology, which can compress cold air to convert the essential oil into dry mist microparticles with high utilization rate, evenly scenting in any environment in minutes. No need for heat or water, you can enjoy pure fragrance without any mess.Natural & Safe: Our waterless diffusers for essential oils bring the scent by nebulizing, which avoid any water dilution to the oil, ensuring the most pure essential oils which is natural and safe for families and pets. The waterless nebulizer supports full spectrum on all pure essential oils. Just add your favorite essential oils and enjoy the pure fragrance without any of the worrying.Mess Free & Noise Free: Unlike other cheap oil diffusers that make a mess, leaving oily and wet residue around, you don’t have to add water to our waterless essential oil diffuser, no need to clean it up frequenly. And the noise level is lower than 30db when wroking, helps create a quite and comfortable environment for you.Adjustable Woking Modes & Timing: Waterless car diffuser features 3 levels adjustable scent modes. Mode 1: Spray 15 seconds every 3 minutes. Mode 2: Spray 60 seconds every 3 minutes. Mode 3: Spray 120 seconds every 3 minutes. And it is designed with 4 levels timing, 1H/2H/3H/4H. Allowing you control the scent grades and timing, and customize the best aromatherapy experience.Portable & Rechargable: Portable essential oil diffuser features a handy design, it can perfectly fits the cupholder in your car. Built-in a super endurance 2000mAh lithium battery, it can support 36 hours working time after fully charged. You can easily take this waterless diffuser anywhere while you are traveling. Comes with the USB cable, it is convenient for you to charge it everywhere. A great travel companion for you.