PLEASE NOTE:The taillight is fully charged in 2 hours,and it need to long press the button to work!!!Description:USB rechargeable bicycle taillight and auto cut off when fully charged.High quality internal lithium battery,only need about 2 hours to be fully charged while be used for about 12 hours.Long Steady Bright----4 HoursSlow Flash----10 Hoursflash in order---12 HoursStrobe Flash----8 Hours4 modes:Long Bright,slow flash,flash in order and strobe.Super waterproof,make you riding freely regardless of rain.High brightness and energy saving LED.Specifications:Name: Bicycle Rear LED LightColor: Five colors mixSize: 7.5*3*2cm/2.95*1.18*0.79"Material: PlasticPower Supply: USB ChargeLighting Mode: 4 Modes: Long bright/Slow flashing/flashing in order/StrobeWaterproof: YesLumens: 15 LumensSpecifications: HeadlightMaterial: PC lampshade ABS lamp coversSize:.6 * 2.9 * 2.2 cmApplicable vehicle tube diameter: 20-40mmCharging time: 3 hours from USBDischarge time: highlight 3 hours, low light 5 hours, glossy 12 hourstaillight:Waterproof bicycle taillightBicycle Rear LED LightBuild-in lithium battery USB rechargeable4 modes Long Bright,slow flash,flash in order and strobeSuper waterproofHigh brightness and energy saving LEDPackage Included:1*Front light1*tail light