These little lights might be the cleverest lights on the market. They are so simple to use as they are magnetic and by simply holding them against your frame they attach and hold firmly in place as you ride. To change the mode you simply, tap them again, against the frame and when you arrive at your destination, click them together, in your pocket/handbag and you are done!
3 lighting modes: steady light, slow flashing, fast flashing
Power supply: 2 x CR2032 batteries per light (included)