Features:
2 LEDs pump out a surprising amount of light, enough to be seen in all conditions.
Silicone body protects the unit from the weather, shocks and general street abuse.
Has four modes: constant, flashing slow or fast and police (alternate sides).
Battery life: 35 hours steady and 16 hours flashing.
Fits around any handlebar, fork leg, maybe even your headtube.
Visible for up to 600m
Lumens: 20,000 millicandelas.
Takes 2 coin cell batteries which are included