The Moon Nebula cycle lights both features Memory mode which stores the last mode used making it easier to set up for your ride quickly. Low battery indicator ensures you do not lose light mid ride with a quick 2.5 hour recharge time. Day flash mode and side visibility ensure you’re seen at all times from all angles. 4 steady modes and 4 flashing modes, quick release. The Nebula achieves a maximum of 220 lumens for just over an hour at the front and 100 lumens at the rear for just over and hour.