They say timing is everything in life, and that this toy makes your timing better. There are four modes: [1] try to stop the timer as close to five seconds as possible, [2] try to stop it as close as possible to 10 seconds, but without going over! (Price is Right, style) [3] practice mode [4] challenge mode.
This is an awesome and unique way to, quite literally, waste time. Click this link to see an hilarious video from the manufacturer.