Designed to fit perfectly with compatible Giant and Liv helmets, Numen Alumbra TL is the thinnest and lightest rear light that installs directly on your helmet. It has a unique magnet mounting design that is easy to install and remove, as well an integrated battery life indicator.

Maximum output up to 20 lumens
ANSI-certified lumens and runtime
IPX4 water resistance
Power status indicator informs you of remaining battery life before powering down
Light memory mode
Compatible with Rev Comp, Compel, Roost, Strive, Lanza, Coveta, Rev Liv Comp, Luta, Path and Relay series helmets