Features: Adopting ultrasonic atomization technology, with a wide diffusion ranges and long-lasting fragrances retention. With intermittent spray modes, the fragrances concentration is more appropriate. Multilevel adjustment: 5 presets modes, the concentration can be adjusted according to the space needs, and the fragrances can be automatically increased when the presets times is reached. USB charging: Built in rechargeable lithiums battery, energy-saving, and long-lasting. Easy to install: Using non marking tape, it can be easily adhered to wall. Not easily detached. It can also be used flat on the desktop. Quiet operation: Professional noise reduction design, operating noise belows 30dB, will not disturb learning and sleep. Specifications: Material: ABS Color: White/Green Size: Approx. 153x53x54mm/6.02x2.09x2.12inch Battery Type: Lithiums Battery Essential Oil Content: 45ml Atomization Area: About 50 Product Gear: 5 Gear Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Automatic Air Freshener