Fivespeed adjustable fragrance atomization: the scent intensity to five levels; the device starts and stops with the vehicle for automatic operation. frequency atomization: uses rapid vibration to create a fine mist and evenly disperse fragrance throughout the car in about 3 seconds; efficient and quick scent production. Natural diffusion design: 360degree diffuser with a centerangle atomizer delivers an even aroma across the cabin, helping to create a calm and uplifting driving environment. Safe and mild formulation: alcohol and without added natural plant ingredients; suitable for pregnant women and kids. The fragrance is mild and nonirritating. Easy integration with car oils: specifically designed for diffusing oils in the vehicle, enabling convenient incar aroma without modifications. Use scenarios: Daily commute: enjoy a steady, subtle fragrance that enhances focus and mood during routine drives. Family trips: maintain a pleasant cabin atmosphere for passengers on long road journeys. Rideshare or taxi: provide a welcoming, comfortable fragrance experience for diverse passengers without overpowering scents. Notes: Designed to operate automatically with the vehicle's ignition for convenient, hands use. Use with your chosen car oil fragrances to achieve the desired scent level.