Features:Applicable to cars, motorcycles, drones, bicycles, etc.7 light colors(white/green/red/yellow/pink/blue/ice blue) can be changed freely.Totally 21 kinds of changes including fast flash, slow flash, steady-on etc.It warns the vehicles behind, keep a distance and avoid traffic accidents.USB rechargeable and can be installed by hook-n-loop or rubber bands.Specification:Item name: LED strobe lightCharging method: USB rechargeableCharging time: 60 minutesBattery life: About 9 hoursWaterproof grade: IP68Product size: About 2*3.8cmColor: BlackMaterial: PlasticNote:For best performance, it is recommended to charge the battery to 100% before use.