Features: brand new and high quality Long-lasting standby, cyclic use, built-in 4400 mAh battery, it can be used for 30 days after a single charge.Release low-concentration ozone to destroy bacteria and make life more at ease. Keep fruits and vegetables for fresh and decompose pesticide residues in fruits and vegetables. Not only can it be put in the refrigerator, it can be used in multiple places. Purify the taste as you like. Easily remove all kinds of peculiar smells in refrigerators, wardrobes, shoe cabinets, cabinets and other places in 30 minutes. Use high-voltage discharge to convert oxygen in the air into ozone, which is an active gas, which can be decomposed into water and carbon dioxide when it encounters formaldehyde. When encountering bacteria, it can destroy the original molecular structure of the bacteria to kill the bacteria, and then become oxygen after deodorization. Small size, generous preservation, fresher ingredients, more lasting taste, let you remove the stumbling block on the food road. Specifications: Input voltage: 5V/1A Ozone output: 2mg/h Working voltage: 5W Charging method: USB Battery capacity: 4400mAh Material:ABS Size:Approx.9.7x4.6x5.2cm/3.82x1.81x2.05inches Color:Black Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Air Purifier