Portable electronic insect repellent, no chemical stimulation, with physical principles, electronic simulation to emit ultrasonic waves to achieve the effect of repelling ticks, fleas and lice. Wide coverage, within 3-10 meters can achieve effective prevention, provide comprehensive and continuous protection, keep your dog happy and healthy. Environmentally friendly, no chemicals or fragrances, safe for cats and dogs. The flashing light can be switched to night mode to reduce the risk of getting lost at night. Product details: The product has a built-in LED light, a USB cable inside and is available in white or black. Material: ABS, product size: 33 * 14 * 46mm, Battery capacity 100mah; power supply: 5V/1-2A, Rated power: 0.008-0.015W, working current: 2-3.5MA, Ultrasonic frequency: 19.5-135Khz (8-band ultrasonic intelligent frequency conversion), Ultrasonic physics repels mosquitoes, 360-degree wide-angle coverage (applicable range: 3-10 meters outdoors, 10-80 square meters indoors), Functional gear: 2 gears, with colorful light waves at night