Have these (bags) lamp now in use for a few days and would rate them briefly. The TrustFire came in a "SecurityIng" box and bubble wrap to. The lamp, however, is labeled with "Trustfire". You can be completely unscrewed and either 2 x 18650 or with a screw "Extension" with 3 x 18650 Li operated ion batteries (the luminosity I've noticed no change, I think this only affects the burn time at max level). The individual parts are doubly protected with O-rings against moisture ingress (I am impressed that there is no special seal is used, the replacement of O-rings will cost only a few cents ..). The TrustFire looks very solid and meticulously crafted. Good pressure point during switch back. So now, but the most important, for the luminosity: the is a MagLite 3D LED conversion kit (this is provided with lumen 180) compared monstrous! This means that if the Maglite lights and I next turn on the Trustfire the light of the Maglite from the Trust Fire "swallowed" completely. She has a broad light cone and is like my Vorrezessent already wrote, "felt brighter than a car headlight H7" ... That can I sign so! Therefore I a strong buy recommendation and 5 star!