Or try this way, You just need to hold down the "clock" button for a few second. The display will lite up. Now, you will notice the 1, 10, 100, 1000 button. Press the "1" button until your desire time.
__________________ VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!