Portable ultrasonic frequencies mosquito repeller for healthcare/no chemical/no side effect/no drug

Model Number: MR100-#2083 Brand Name: cosylife Key Specifications/Special Features: Sophisticated electronic mosquito repellerSweeping windeband untrosonicfrequencies to make interfering noise to mosquito and small insects.Sweeping Sonic frequencies to mimic male mosquito flapping wingsUltra lower frequency to mimic dragonfly flapping wingsPurplelights sensitive to mosquito in pitch dark room make them watch out dangers38 wide range speaker insideEffective area is about 100-150Sq ft (about 10-15sq.m)Supplied with strap for outdoor use