【Scent Profile】:Ocean flavor, bluebell fragrance, and fresh sweet scent. 【Pronounced fragrance】:Essential oil concentration increased by 30-50%, resulting in a stronger and richer scent. 【Pure and Safe】: Natural essential oil, not synthetic; safe for pregnant women and babies, free from harmful additives, natural and healthy. Master perfumery, formulated to avoid nausea and dizziness. 【Compatibility】:Can be directly used with car air freshener devices shown (e.g., JK-579/576/577/572, F26, etc.). For other types of air fresheners, pour the fragrance into the original container. Note: This fragrance is designed for smart car air fresheners, so it won’t clog. 【Usage Duration】:3.38 fl oz (1.69 x 2) capacity, lasts for 12 months on light scent mode, 4 months on strong scent mode, and overall lasts for 4-12 months. 【Usage Instructions】 : You will receive 2 bottles of fragrance and 1 replaceable cotton wick. After changing the fragrance, wait 5-10 minutes before turning on the air freshener.