1.ENVIRONMENT: Find a bottle, fill it with water, then cover the bottle cap with a filter, and connect it to any USB power outlet. The wireless car humidifier is used in a variety of environments such as home, office, car, etc., to enjoy humid air anytime, anywhere. 2.MOISTURIZING: The release of water vapor increases the moisture content in the air, that is, humidity, which helps prevent dry nose, bleeding, and cracked lips. Get rid of the dryness of any indoor environment such as homes, offices, and cars. 3. COMPATIBILITY: mini portable humidifier, compatible with a variety of bottles, such as soft drinks, water bottles, etc., automatically shut down within 3 hours to protect the humidifier. 4.EASY TO CARRY: The mini humidifier is small in size, compact in structure and easy to carry. You can put it in your wallet, suitcase, backpack. You can enjoy the convenience of a humidifier anytime, anywhere. 5.Ideal for women/girls/teens/friends/family members of birthday gifts, wedding gifts, Christmas gifts, Thanksgiving gifts, Valentine's Day, Mother's Day gifts and any surprised day gifts.