These are fully tested and working units. If your bike's ID or Serial No. does not start with a T1 then you do not have a compatible Flash ebike that works with these lights. Make sure your Flash ebike is in the OFF position.
Lot Diamond GEM LED VALVE BIKE LIGHTS cycling bike flash tire wheel safety lamp. Title: LED Lighted Battery Spoke Lights - Enhance Your Bike's Style and Safety! FLASHING AND SOLID STATIC MODES. Multiple Lighting Modes: Choose from a range of lighting modes, including steady glow, fast flash, slow flash, and more.