The Smart Car Air Freshener is a rechargeable aroma diffuser. It holds 50 ml of plant-derived, alcohol-free perfume. It also has 7-color ambient lighting and projects a starry sky. It has auto on/off with a micro-sensing chip. You can choose from three spray modes: light, strong, or continuous. Plus, it uses nano mist technology for quick and even scent distribution. This device fits car cup holders and runs quietly. It creates a fresh, modern, and relaxing atmosphere in your car. Plus, it offers long battery life, lasting up to ~30 days per charge.

Pros:
- Smart auto on/off and long-lasting rechargeable battery reduce hassle and extend usability.
- Versatile experience: 3 adjustable spray modes, quiet operation, and colorful ambient lighting/starry effect enhance ambiance.
- Effective scent delivery: nano mist disperses evenly; included 50 ml fragrance is long-lasting and generally described as fresh and pleasant.
Cons:
- Potential sensitivity concerns: at least one user reported irritation to throat and lungs when used in a poorly ventilated setting.
- Inconsistent lighting claims: some users say the projector does not cast stars on the car roof or only displays a single color.
- Scent perception varies: a few users find the fragrance faint or reminiscent of cheap cologne; setup (e.g., cotton stick installation) can be confusing.