there be two kind of flashlight : the run-o-the-mill commodity number and the mag light . mag be the `` snap on '' tool of the flashlight world ; build without compromise to become a sort of work art . they resemble a good quality camera or telescope in they construction .  the four d-cell mag be the Caddy of they all . these be incredibly bright -lrb- you 'll regret look into the business end of one -rrb- . four d-cell capacity translate into very long service on a change of battery . and if you ever find yourself in a dark alley -lrb- which will not be that dark if you lug this sucker in with you -rrb- , the sheer size of this flashlight will be a comfort - it be like a nightstick in length and heft . like all the larger mag , they can store a extra bulb in the cap -lrb- include -rrb- so you be never catch unprepared .  if you be the sort that be always lose flashlight , spring for a mag - you 'll like it so much that you 'll surely keep track of it .