DUAL-USE DESIGN: Portable air purifier designed for both car and home use, fits perfectly in cup holders, trucks, and on desks to quickly purify air NEGATIVE ION PURIFICATION: Features negative ion purification technology combined with three-speed adjustment settings for customizable air cleaning performance with light sound and strong airflow QUIET OPERATION: Ultra-quiet performance with maximum noise level of 53dB or less and low power consumption of 3W or less, powered by DC 5V for efficient and peaceful operation POWERFUL AIRFLOW: Delivers maximum airflow of 15 CFM (cubic feet per minute) to effectively circulate and purify air in your vehicle or small personal spaces COMPACT DIMENSIONS: Measures 2.6 inches in diameter and 7.09 inches in height (66mm x 180mm), making it space-saving and easy to place in various locations without taking up much room This portable air purifier is designed to keep the air fresh and clean wherever you go. It has a compact structure and diverse functions, making it perfect for placing on a cup holder in a car and working well on a desk at home or in the office. The smooth black cylindrical design has a diameter of 2.6 inches and a height of 7.09 inches, making it easy to place in small spaces without taking up valuable space. This efficient air purifier is powered by DC 5V with a maximum power consumption of only 3W, providing an impressive 15 CFM airflow to circulate and purify the air around you