Item Specifications:100% Brand New Solar energy rechargeable tail lightSuper Bright Red LED， wide beam3 function modes: Steady， Slow flash / Quick flashSingle button operation， just press the one buttom to choose your preferred flash lighting modeQuick release bracket， portable attachment to your bicycleFit for frame post diameter between 22mm-30mmWork time: 4 hours in lighting mode， flash mode more than 8 hoursMake your visible on the road at dark， perfect led bike light for night-time safety when cyclingThis solor power LED bicycle light is designed for both professional and amateur ridersNotice: Turn off the light， put it under the sunshine， each time charge 2 hoursItem Specification:Light bulb:2 LEDLight Color: Red LightAppearance color: Black + RedSwitch: press style switchBattery: no batteries， solar-typeLight Size: 7cm*5.5cm*2cm (LWH approx.)Hoop-diameter: 22-30mmPackage Included:1pc x Solar energy red bike lamp