Features‎:‎100% and igh qualityQuick and easy installationApplicable for bike‎,‎ home and outdoor useWith silicone lamp bandWaterproof design‎,‎ no worry to get wet in the rainSpecification‎:‎Body Color‎:‎ BlackMaterial‎:‎ Aluminium alloy + siliconeLight color‎:‎ RedLighting modes‎:‎ 3 modes‎,‎ including steady‎,‎ quick flash and slow flash1x Light Emitting DiodeLED type‎:‎ F5 straw hat lamp beadBattery‎:‎ Two CR2032 batteriesHow to use‎:‎The switch in the front‎.‎ Press it for once‎,‎ the light with plastic cover will be bright‎.‎ Press it again to change lighting modes‎.‎Package includes‎:‎1 x Bicycle Tail Light2 x CR2032 batteries