Feature: 1.The filter is made with advanced nano technology. Capture the liquid like a magnet and without toxic chemicals.Easy replacement every 2-3 months to save cooling power 2.Replacement filter for mini usb portable air conditioner from Heartbeat is built with rapid functions of water absorption and heat absorption.100% mineral fibers prevent mold and bacteria from growing 3.Do it yourself in a few seconds. After 2 minutes the evaporative cartridges will be fully hydrated and will gradually cool the air around you.Very efficient with huge evaporative surface 4.The wind takes out the negative ion of cooling for you. When closing to skin, the somatosensory temperature can feel about 5 -8 . Specification: 100% Brand New and High Quality Quantity: 1PCS Color: as picture shows Size: 11x11x12cm Note: Please allow 1-5mm errors due to manual measurement.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Package included:1PC Replacement Filter (Air Conditioner NOT INCLUDED)