Where the laser pointer opens.

Lasers, we do love our lasers! From the classic Red, to the bright Green, to the sneaky, changing Violet we love the fact that we can have such a unique pointing device in our hands.

But laser pointers have undergone a few changes in recent years, and some of the changes may be hard to figure out. Times were they were all like flashlights: one end would screw off and you would insert the batteries (AAA or button cell). They would resemble this laser pointer: