Features1Wireless remote controller can easily control the function of taillight during Cycle. 2Built-in 500mAh rechargeable battery, allow the bike taillight to be fully charged in 1.5-2 hours and can work for about 8-9 hours. 33 adjustable lighting modes by controlling the power switch of light for your different demands. 4Rainproof design provides convenience during rainy days. (NOTE: Please do not soak into water for long time.) 5Come with installation parts,easily install on your bike helmet.SpecificationFeatures:Wireless remote controller can easily control the function of taillight during Cycle. Built-in 500mAh rechargeable battery, allow the bike taillight to be fully charged in 1.5-2 hours and can work for about 8-9 hours. 3 adjustable lighting modes by controlling the power switch of light for your different demands. Rainproof design provides convenience during rainy days. (NOTE: Please do not soak into water for long time.) Come with installation parts,easily install on your bike helmet. Specification:Model: Type A / Type B / Type C / Type D (optional) Material: Plastic ModelType AType BType CType DInstallation PositionBike SeatpostBike SeatpostHelmetHelmetLeft&RightTurn SignalsControl MethodGravity SensorWirelessRemote ControllerGravity SensorWirelessRemote ControllerBattery Capacity500mAhCharging Time1.5-2hrsWorking Time8-9hrsWaterproofRainproof3Lighting ModesAlways-on Mode / Breathing Flash Mode / Strobe ModeLight Size120*34mmLight Weight40gPackage Size13.5*9*5cmPackage Weight85g110g85g110gPackageList1* Light1* Cable1* Manual1* O Ring1* Light1* Cable1* Manual1* O Ring1* Controller1* Strap1* Light1* Cable1* Manual1* Tape1* Light1* Cable1* Manual1* Tape1* Controller1* Strap(Type A)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* O Ring (Type B)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* O Ring 1* Remote Controller (with a CR2032 battery) 1* Silicone Strap (Type C)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* Fastener Tape (Type D)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* Fastener Tape 1* Remote Controller (with a CR2032 battery) 1* Silicone StrapPackage List1* Light 1* Type-C Charging Cable 1* User Manual 1* O Ring (Type B)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* O Ring 1* Remote Controller (with a CR2032 battery) 1* Silicone Strap (Type C)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* Fastener Tape (Type D)Package List:1* Light 1* Type-C Charging Cable 1* User Manual 1* Fastener Tape 1* Remote Controller (with a CR2032 battery) 1* Silicone Strap