Simple Operation: just need to choose the fragrance piece you like, put it in the storage space in the middle of the clip, and then clip it in the air outlet of the car air conditioner or any suitable position you like
ENDLESS FRAGRANCE: This diffuser will last 30 – 90 days depending on frequency of use. The strength of the fragrance is completely up to you too, just tip the bottle whenever you need to refresh the scent!