The cateye el220tl155 omni 5 light set is a great addition to your bike when the nights start drawing in earlier and you need extra visibility to and from the office when riding on the roads both of the bike lights feature 5 leds that provide excellent visibility with the front light boasting opticube lens technology and new omni directional technology on the rear light ti improve performance on the lights the front light has two different lighting modes whilst the rear has three and the 360