Features: Usage: O3-refrigerator deodorizer is a multifunctional air purifier that can electronically release ozone, eliminate odors, and maintain freshness. 2 adjustable modes: The first-mode is to maintain fresh-disinfection. The timer is 5 minutes and will automatically turn on after 90 minutes. The first-mode is deep disinfection-modes. The timer is set to 30 minutes and automatically starts after a 30 minutes pause. Effective and safe: As a refrigerator deodorizer, unlike baking-soda and bamboo-charcoal bags that only absorb odors, ozone-machine can quickly and effectively circulate active-oxygen to every corner of the refrigerator. Reduce the amount of fallen-activated-carbon. Reusable: No need to replace filter, reusable! USB charging refrigerator deodorizer is fully automatic and maintenance-free, saving-time and money! Lightweight and compact: This portable deodorizer comes in a lightweight and compact-size. You can put it in the refrigerator, freezer, shoe cabinet, closet, wardrobe, car, pet room, etc. Specifications: Material: ABS Input current/voltage: DC5.0V/1000mA Battery voltage: 3.7V Battery power: 7.4W Battery capacity: 2000mA Usage time: Fully-charged for about 8-80 hours (two speed purification-mode) Ozone content: 20mg/H Applicable area: belows 10㎡ Noise: ＜36db Working principle: Ozone Control method: button type Size: As shown Package Includes: 1x Fridge Deodorizer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.