A reminder from the good old days of tech, and an antidote to the modern wave of healthful gizmos like the Nike+ . The Wrist Lighter is a stealth cigarette lighter, and while it probably only holds enough butane for a pack or two, at least it's unloseable.
Good luck trying to fire up a fag in the wind, though. Shielding the flame would be harder than touching your left elbow with your left hand.
Wrist Lighter 1947 [Modern Mechanix via Watchismo Times]
