> 3. Casio digital watches. These are used as timers for improvised explosives but again, they're incredibly reliable. And cheap. While the watches themselves

> 3. Casio digital watches. These are used as timers for improvised explosives but again, they're incredibly reliable. And cheap. While the watches themselves last forever I find that the strap or loop breaks pretty quickly at which point the cheapest option seem to be buying a whole new watch.