Recently I discovered Reelights, this clever magnetic product eliminates the need to think about bike lights again! No scrambling around in my bag hunting for them or worst yet you’ve forgotten them they’re in your other bag at home, no flat or tired battery issues, no switch and always on when you need them. They work by fixing two magnets to the spokes. When the wheel spins, the magnetic field causes a current to run in copper wires inside the lamp housing. Power is stored in a capacitor, so the LED lights will stay lit when you stop, and the output is steady, regardless of your speed – Genius.