Features:12-stage frequency conversion biological wave can effectively remove mosquitoes.No need to spray chemical insect repellent, no harm and safe for human health and environment.6 kinds of biological sound waves and 200 square meters large area coverage, more efficiently to drive the insect and mouse.Say goodbye to mosquitoes and other annoying insects that are harm to human, preventing biting from mosquitoes.Portable design, easy to carry, suitable for using in bedroom, living room, office and other indoor places.Specification:Condition: 100% Brand NewMaterial: ABSColor: BlackPower: 5W~8WCoverage: 200Working Current: 50mA~80mAUltrasonic Frequency: 22KHz~85KHzPower Supply: US Plug AC100~120V, EU Plug AC210~230V, UK Plug AC210~230V, AU Plug AC210~230VSize: Approx. 11*6*3 cm / 4.3*2.4*1.2 inWeight: Approx. 100g / 3.5 ozInstructions:1. After plugging in the power, press and hold for 2 seconds to turn it on, and the sound will be "beep" once and the light will be on.2. The white light turns green, the sound will be "beep" once, and the system begins self-testing.3. The green light turns blue flashes, the sound will be "beep" once, the ultrasonic wave starts to work automatically. The blue breathing light remains on, press and hold for 2 seconds, will be "beep" once, the system automatic shuts down.4. If the system red light flashes, it indicates that the power supply is abnormal, it is forbidden to work!Package list:1 * Insect Repeller1 * User Manual