maglite s6d016 heavy-duty 6-d cell flashlight , black  it have never fail . the focus and brightness be fantastic . it be a little long and heavy , but if you want a potential personal defense tool , it can certainly fill a niche . because it be so long and heavy , it have a lot of momentum and for a un-trained person , it could possibly be take away by a attacker . if you be a pet lover and walk you dog where there be either human de-sensitized coyote or feral dog pack , the impact can be lethal and the brightness enough to blind temporarily for a fast getaway . although I be a 20 + yr armed\/unarmed instructor and be also train in the use of baton , I feel quite comfortable with it although it be slower to maneuver than a straight wood baton . besides be a long-lasting and reliable source of focusable light , it be not consider a weapon . when visit NYC year ago , it be always in my daypack . I have hear rumor that the construction be not as good now and I will definitely review the new one when I get it .