Portable Repellent Ultrasonic 2 Light Modes Reduces Pets Lost Hangable Indoor Outdoor Pest Repeller black.Features: High Efficiency: Ultrasonic insect repellent built-in intelligent frequency conversion chip can control the ultrasonic generator emission 8 different ultrasonic wave bands and intelligent random switching of different wave band frequencies. Prevents mosquitoes, flies, ticks, fleas, lice and other pests. Large Coverage: 360 degree protect your entire family with 3-10m/9.8-32.8ft out