Features:  Special-designed diffuser, shaping the lighting for cycling use;   XPG3 LED chip, grants up to 600lumen output, side visible;   5 light modes optional, to meet different needs of light brightness;   Overheat protection circuit ensures stable and long service life;   Detachable wired switch per order option for handy light control;   Built-in quality battery provides long run time up to 9 hours;  Quick mount and release.    Specification:  Light Source:1* XPG3, Cool Daylight Tone;  Light Output:600lumesn Max.;  Beam angle:85 degree; Beam distance 200m;  Light Mode:5 modes; Mode memory: Available;  Switch:Top Press button (Detachable wire switch per order option);  Battery Built-in:1* 18650 2500mAH, charge 5V/0.7A;  Charging Indication:Available; Low battery indication:  available;  Run time:1h 30m-9hrs ;    Package included:  1 x Bike Headlight;  1 x USB cable;  1 x Bracket