A bright white front light and a red rear light that go on in seconds with stretchy silicone straps: no tools, no brackets left on the bike. Four modes on each, from steady beam to flash. Both charge by USB and run from three to ten hours depending on the mode. They shrug off rain, and come off just as quickly to go in your pocket when you lock up. Handy beyond the bike as well: on a pushchair, a scooter, a dog lead or a rucksack on dark winter walks. Two charging cables are included.