Description:1.MosquitoRepellentElectronicBracelet:Thelatesttechnologyintelligentelectronicmosquitorepellentwristband,unobtrusiveultrasound.Createasoundbarrierthatprotectsyoufrommosquitobitesnomatterwhereyouare!2.USBChargingandReusable:Unlikeotherbrandsofdrugbraceletsneednewreplacementsorchangecapsuleseveryfewdays.Oursmartbraceletcansolvethisproblemforyou,built-inaluminumpolymerbattery,chargingfor15minutes,standbyfor30days,24hoursofuse;savemoneyandtrouble.3.FashionandLightness:Blackandwhite,stylishandportable,siliconestrapwithadjustableskin.Saygoodbyetotheskinofherbalbracelets,preventharmfulchemicals,noodor,suitableforinfantsandchildren.4.MosquitoRepellentSoundWaves:Thebraceletachievesthemosquitorepellenteffectbymimickingtheunpleasantsoundsoffemalemosquitoes,suchasmalemosquitoesandcockroaches.Parameters:Function:UltrasonicmosquitorepellentInput:5V/1AOutput:34Hz-70KHzBatterycapacity:90mAhChargingtime:about30minutesLifetime:130hoursColor:black,whiteList:MosquitoRepellentBracelet*1Cable*1Instructionmanual*1