$5 LED Strobe Light / Flasher at Wal*Mart

Here's a variable-rate flasher/strobe using LEDs available right now at Wal*Mart for $4.97!

Batteries included!

Comes with a locking stand that can be used as a mounting bracket.

Change the LEDs to high intensity red for use as a rear flasher.

It can be found in the Halloween section.

Here's a quick video I made of it:
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( I don't know if this post belongs here in the Lighting and Electrical section, or in the Swap and Shop section)

Cool!
Five bucks, how can you beat that!? I will have to go back to the store and get a few more.
Maybe even power them off of the white wire from the engine...

It uses three 1.5 volt cells, so it runs on 4.5 volts.
The potentiometer control only offers a variable flash rate.
I took a look inside, and it has a little PCB with two or three transistors on it, so it' would appear to be a simple flip-flop circuit with the LEDs hung off one of the transistors. The four LEDs are wired in parallel.
It could easily be wired for constant-on operation by bypassing or eliminating the PCB and connecting directly to the LEDs via a current limiting resistor.