Elzetta, Surefire, or Acebeam looks, Elzetta or Surefire body construction, Elzetta or Surefire knurling or Armytek matte finish, Elzetta HA, Armytek threads, Zebralight efficiency, Elzetta or Malkoff potting, Elzetta TIR, Acebeam output and throw performance, (Klarus style magnetic charging)...