The i-Torch 555 is driven by 3XAA battaries providing 555 lumens and 1-2 hours burn time. A great price point with YS-adaptor mount included and using the super bright MC-E LED. The reflector is a special design that has been CNC cut so the light beam is evenly diffused. The 555 is a great choice for digital camera HD movie illumination or DSLR target/ focus light, as well as a video light. These features make the i-Torch 555 the best value for your money in the market