The ultimate stopwatch machine! Use it to set up a timer or stopwatch by using the buttons. What each button does: Reset Button: Resets the timer in the middle. Stopwatch Button: When pressed, it makes the timer go up in seconds. Goes up to 999 seconds before restarting. Timer Button: When pressed, the number on the far left will glow white, use the left/right arrow keys to change the number selected. Use the Up/Down arrows to change the value of each number. Hit the "start timer" button to make the timer begin counting down, with the number you set on it. The timer will beep once the timer reaches 0.