The Ringlight 3000 gives you 1800 lumens (continuously), or a burst of 3000 lumens triggered by a fiber optic cable. The light can be easily mounted on any 67mm port or adapter via its 67mm threads. The burn time is roughly 1 hour at the highest power level. The light is powered by one 26650 battery . The battery (26650 lithium) is already supplied in the package and it comes with a small and easy to use charger.