How can I stop KLIK watch?

Hi to you all, including all others,

I want to stop my KLIK radio watch.
How can I put it in a SLEEP MODE.
I want to use it at a later date without wearing out the battery.
I AM AT A LOSS (for words).

So where is the BRAIN OF THE UK.

There must be someone who can tell me, or is it a CHINESE SECRET.......

Don.t let me down.... You will be rewarded.....