The Weefine ring light gives you 1000 lumens (continuously) with 4 different power levels (100%, 75%, 50% and 25%) and 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 Ringlight 1000 is powered by one 18650 battery or three AAA batteries. The battery (18650 lithium) is already supplied in the package and it comes with a small and easy to use charger