Well... I guess both. The display is super cool, but without the counting down feature it's just a light..
I'd love to know how to integrate the components to count down and how to get those LED numbers to work.. I'm pretty familiar with those kinds of electronics, but the devils in the details. I'm an arcade tech, so I have to repair video game guns like House of the Dead and Time Crisis all the time. I know how to do the triggers and what parts to use there, but I don't know anything about the LEDS and counters...