NiteRider Omega 330 Taillight keeps you safe with Daylight Visible Flash Modes up to 330 lumens. Six light modes allow for long battery life and convenient USB charging make this a great tool to ensure safety. Omega might be the last letter of the Greek alphabet, but it comes in first in lumen count among NiteRider® taillights. NiteRider® puts those 330 lumens to work not only during the night, and providing Optimal VIZ in the day as well with its Daylight Visible Flash (DVF).