I already own this light, but paid a bit more. Excellent output and run-time using Eneloop Pro rechargeable AAs. Great distance on the beam for a light this size. Much less 'flood' than NiteCore's other 4xAA light, the EA41, or the ThruNite TN4A which I have also owned. I do like the extra SOS/Beacon modes, but preferred ThruNite's one-button operation and the button mechanism itself.