The pax lacks everything except a cool look. now when you talk about metal detectors it gets fun. You can leave the mflb in your pocket walk through a metal detector and put you battries through the xray scanner. Leave the pax in your packet and its going to be hell. Also does any one know what your mflb looks like in the x ray scanner and what the pax looks like in an xray scanner.....ive seen both....pax looks shady as hell (think mini bomb) and the mflb is almost unnoticeable through almost all the filters.