... , seat, helmet, wheel, hub, etc. 4. 3 operating modes like Slow flashing mode, Fast flashing mode, Constant mode ... No. 6. Power is CR2032 3V battery Silicone LED Light, can attach them to your bicycle, your bag, ... or even your shoe laces.The super bright LED light has two settings, either a constant beam or ... a flashing light. And because they glow in the dark it' ...