1、One Key Operation: Physical removal of mites, safe and harmless, plug and play, simple operation, one key operation. 2、Remove Mites: The ultrasonic frequency can be changed continuously within the effective range, making the mites unable to adapt. 3、Effective Effect: Has the effect of long lasting mites removal and prevention of mites growth. 4、Changing Ultrasonic Frequency: Adopts intelligent frequency conversion, and the frequency is constantly changing to adapt to the environment. 5、Safe to Use: No harm to infants, pregnant women, pets, environmental protection and energy saving, and protects the health of the family.Item Type: Ultrasonic Pest Repeller Material: ABS Power Supply Mode: USB Plug In Frequency: 50Hz Product Efficacy: Physical removal of mites, safe and harmless, plug and play, simple operation, one key operation. The ultrasonic frequency can be continuously changed within the effective range, making the mites unable to adapt, so that it has a long term effect of removing mites and preventing the occurrence of mites. It has no harm to infants, pregnant women, pets, environmental protection and energy saving, and protects the health of the family.1 x Mite Repeller 1 x Manual