It's not NarsilM or Anduril, not the best:

  • click ON for modes, click to advance a mode level, click&hold for OFF
  • click&hold for ramping ON at the last level, click for OFF
  • ramping goes to max turbo, while for modes, dbl click for max turbo

And the head does get hot quick in turbo with the 4 SST-20's running on a 30Q cell.

For me it's a great light to mod - simple driver replacement.