Everyone, I figured it out. I tinkered with it and popped out the white discs, and discovered the LED units inside (with replaceable batteries). To turn on the lights, all you need to do is press the white discs firmly between your fingers (while they are still in the spinner, no disassembly required). They have a small button on the opposite side of the batteries, inside the white casings. I discovered this accidentally, when I tried to place the discs back inside the spinner body. And presto, they work! They have 3 different flashing sequences, then they turn off.