QD256 uses high-quality LED light source and semi-aluminum shell to ensure high brightness and meet the heat dissipation requirements; Comply with ECE and ISO; The light distribution design scheme of high efficiency lens (low beam) and thick wall light guide (daytime running light); It integrated the horn warning function , daytime running light and low beam light together; High decibel ceramic buzzer chip and special driver chip to output more stable and pleasant sound quality; Quick release and assembly design of reflector; It is suitable for bicycles, ebikes, motorcycles ,two wheel and tricycles.