ize: 3.3CM*2.5CM Operating Voltage: 3V-12V, DC Compatible.
For the LED flasher, there are many possible applications, especially for the kids, who love flashing light, here is some possible uses. Railroad crossing signal for model railroads.
Saftey blinkers for bicycles, etc
Fun stuff for Halloween, like making those plastic Jack-o-lanterns blink(Try using ultraviolet LEDS here)