Ultrasonic Insect Repellent Electronic Mosquito Repellent Portable Mosquito Killer Lamp Anti Fly Ultrasonic Insect Repellent Electronic Mosquito Repellent is a portable mosquito killer lamp designed to effectively repel mosquitoes and flies. Featuring frequency conversion resonant ultrasonic technology, this mosquito repellent emits radial reflection sound waves with continuously changing frequencies, making it difficult for mosquitoes to adapt. The 360 full surround sound design ensures that mosquitoes are unable to stay in any direction, providing you with a mosquito-free environment. The repellent also includes a diffusion LED light with 56 low-diffusion LEDs. The warm white light is suitable for sleeping and does not disturb your sleep. Additionally, it features a light-sensitive night light that automatically turns off when the surrounding is bright and turns on when it is dark. With voltage overload protection and a power-saving chip, this mosquito repellent is not only effective but also energy-efficient. It is lightweight and compact, making it easy to carry and use wherever you go. Say goodbye to pesky mosquitoes Key Features: Frequency Conversion Resonant Ultrasonic technology for effective mosquito repellent 360 full surround sound design to prevent mosquitoes from staying Diffusion LED light with low-diffusion LEDs for a comfortable sleeping environment Light-sensitive night light that automatically turns on and off Voltage overload protection and power-saving chip for energy efficiency Portable and lightweight design for easy use on the go