This is a quad-type flashlight with 4 Nichia 519A bulbs. The Japanese-made Nichia 519A was advertised as having good color rendering and being easy to see. (I personally don't feel that way, though.) - Brand: Wurkkos - Maximum 3100 lumens, beam distance 191 meters - Battery type: 21700 5000mAh - Color: Black - Thank you for looking. [Weakness] Quad type (tends to get hot because there are 4 bulbs) Turbo mode is good, of course, but for normal use (if operated at a level where heat is not felt, the brightness is a bit insufficient). [Good points] Cool design, bright turbo mode. The magnetic tail cap, which was weak in previous models, has been strengthened in this recent model. If you are interested in this product, please search for "Wurkkos Ts26s" on the web or YouTube. Addendum: I previously listed this as "beautiful condition," but there was a slight scratch on the tail cap, so I have changed the condition to "above average." Features: Rechargeable