Water Purifer, Machine, Remove Smoke Air for Home Specification: Features: 1. Can be used in refrigerator, to kill , decompose remined agrochemical, fertilizer and so on, prevent from chronic poisoning, prolong food storage time. 2. Effectively purify harmful substances, kill , remove smoke and odor. 3. Mini, compact and portable. Suitable for shoes cabinet, baby room, closet. 4. Extend the fresh time, avoid different foods smell mix together. 5. Power in by USB cable, it can be connected with computer or power bank. You can also buy battery to start the air cleaner. Specification: Condition:100% Brand New Material: ABS Color: As Pictures Shown Electric Current: 60mA?10% Battery: 4 xAA Batteries (Not Included) Output: 3mg/h Power: 0.5w Size: approx.9.4x9.5cm/3.7x3.7in Weight: Approx.192g/6.8oz Package list: 1 x Air Cleaner(Battery Not Included) Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.