ACEBeam EC35 1200LM CREE XPL LED Flashlight Use 1x18650 or 2xCR123A or 2x16340 9 MODES COOL LIGHTS: Bike wheel lights comes with both steady and flashing modes, you can select the mode whenever you want.Totally 9 light modes available: steady red, steady blue, steady green,steady pink,steady yellow,steady light blue,steady white,7-color smoothly changing.automatically flashing.Easily change modes with one button.