1UPGRADED COLD AIR DIFFUSION TECHNOLOGY: Unlike ordinary ultrasonic essential oil diffuser on the market, this car diffuser for essential oils adopt 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 2NATURAL AND SAFE: 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 diffuser support full spectrum on all pure essential oils. Just add your favorite essential oils and enjoy the pure fragrance without any of the worrying 3MESS FREE AND NOISE FREE: Unlike other cheap oil diffusers that make a mess, leaving oily and wet residue around, you dont have to add water to this waterless car diffuser, no need to clean up frequenly. And the noise level is lower than 30db when wroking, help create a quite and comfortable environment for you 4PORTABLE AND RECHARGABLE: Portable essential oil diffuser feature a handy design, which can perfectly fit the cupholder in your car. Built in a super endurance lithium battery, you can easily take this waterless diffuser anywhere while you are traveling. Come with the USB cable, which is convenient for you to charge anywhere and anytime. A great travel companion for you 5EXCELLENT MATERIAL: Waterless essential oil diffuser for car feature aluminum shell, which is light weight, long lasting and look very elegant Item Type: Waterless Car Diffuser Material: Aluminum alloy Capacity: 10ML Power Supply Battery: 1 x Lithium ion battery 300mAh 1 x Aroma Diffuser 1 x Charging Cable 1 x Dropper 1 x User Manual 1 x Storage Bag Have a great time shopping!