Smart car air freshener The 3-speed adjustable smart car air freshener diffuser ultrasonic atomizer can easily eliminate various odors and provide a refreshing experience. 3-speed gear adjustment: Fresh fragrance mode: green light, spray for 0.2 seconds every 300 seconds. Light fragrance mode: blue light, spray for 0.2 seconds every 90 seconds. Strong fragrance mode: purple light, spray for 0.2 seconds every 10 seconds. Specification: Product material: ABS + aluminum alloy Car aromatherapy machine size: 2.48*1.61*1.15in Installation method: air outlet clip Quality warranty: We offer 1-year quality warranty on our smart car aroma diffusers. If you encounter any problems during the warranty period, we will provide free replacement or refund.