-- Ozone can effectively eliminate the smell of refrigerators, and can also prolong the shelf life of food, is thebest choice to protect the health of the refrigerator. - Portable design - convenient ultra-small design, space saving, compact and portable. Its small size makes it ideal for use in any air-flow limited space such as wardrobes, shoe cabinets, refrigerators,hunting bag and automobiles. - Cycle mode: long press the power button to start working, the indicator blue light is flashing, it will sleep for 6 hours after working for 10 minutes, and then (it will work for 3 minutes and sleep for 6 hours, so that the machine will automatically shut down when it runs out of power). - General mode: the green light indicates that the breath is flashing, and it will be shut down automatically after working for 30 minutes. - Strong mode: the indicator purple light breath flashing, after working for 60 minutes, it will automatically shut down. - USB charging - built in lithium-ion rechargeable battery, 1800mAh, USB interface can be used with computer or mobile power supply, ultra-low power consumption. Warm Tips: When the ozone machine is working, please make sure that there are no people or pets in the room. Our products have been well tested, examined and packaged before sending off. Any problem please feel free to contact us first so that we can supply the best service for you.