Powerful air purification: a 3level adjustable diffusion system refreshes your car interior, creating a consistently pleasant driving environment for daily commutes or long journeys. Rechargeable wireless design: 500mAh battery enables cordless operation with charging via the included USB cable, providing lasting fragrance coverage without a constant power connection. fragrance control: three diffusion modes let you adjust scent intensity to suit your preference and driving conditions. Atmospheric star projection: builtin LED light display projects calming star patterns to transform the car interior into a relaxing space during night drives or stressful traffic moments. Use scenarios Daily city commuting: keeps the cabin fresh during frequent stops and starts. Long road trips: maintains a steady fragrance presence without needing to stay plugged in. Night driving or heavy traffic: star projection adds a calming ambiance while you focus on the road.