Upgraded Cold Air Diffusion Technology:Unlike ordinary ultrasonic essential oil diffuser on the market, our Waterless Diffusers for home adopts the lastest cold air diffusion technology, No need for heat or water, you can enjoy pure fragrance. 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. Just add your favorite oils and enjoy the pure fragrance. Wide Scent Cover:Covering up to 400 sq.ft. Waterless oil diffusers for home provide a long-lasting fresh scent, even in large rooms. Make your place fragrant or soothing. It is very suitable for use in bedrooms, living rooms, study rooms, cars, spas. 3 Spraying Modes & Timing Function:Waterless diffusers for essential oils has three spraying modes. Spraying 15, 60 or 120 seconds every 180 seconds. And it features 4 levels timing. You can choose the spraying mode according to your different need. Portable & Rechargeable:Waterless essential oil diffuser features a compact size and can fit well in your car cup holders. Built-in a super endurance 2000mAh lithium battery, it can support 2-3 days working time after fully charged. Leak-Proof Design:Waterless oil diffuser features smart leak proof design. After the scent machine is dumped, it will automatically stops workin.