Portable designconvenient 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 chargingbuilt in lithium-ion rechargeable battery, USB interface can be used with computer or mobile power supply, ultra-low power consumption.