1.super bright bike light 2.use 3*cree xml-t6 led 3.orginal factory 4.shortage production cycle ... hours!2.Intelligent digital circuit control,working volltage:8.4V,four-mode memory dimming circuit,point-touch ... ,2pcs in series),capacity: 4400 mAh,voltage: 8.4V,providing one rubber ring for the wired ... light will be on and slowly flash,make you feel safer and more comfortable in the long time outdoor ...