Ionic Air Purifier, USB Portable Air Ionizer Ozone Freshener Remove Cigarette Smoke, Odor Smell, Bacteria, Mini Air Cleaner for for Small Bedroom, Pets Room, Refrigerator, Car, Traveling -TEC.BEAN MINI DESIGN - Product Size :94 mm * H 95 mm , super mini and space-saving, compact and portable for your convenience. EASY TO OPERATE - Power it and just press ON/OFF button/working modes button, once the LED indicator light is on, it means that it's working. Its so easy operation. EASY CHARGING - Powered by mini USB cable, connected with computer or power bank; or by 4 AA batteries(NOT included) LATEST TECHNOLOGY - It utilizes advanced high pressure ionization technology, purify the air and kill bacteria only within 30 minutes. And with the Microcomputer Control Technology- THE BEST part- it doesn't require to replace any filters. FEATURES - Eliminate 99% airborne bacteria in SMALL SPACE. It also destroys odors and dispel gas, prevent from catching a disease or a virus being spread through the air. Perfect for use in refrigerators, closets, shoe cabinet, bathrooms, baby room, pantries, pet zones, and in cars.