Default 'ok Google'

I have updated my N8010 to 4.4.2. I was really hoping that it had the Google search feature where you say 'ok Google' like my S4 has, but it doesn't. I was wondering if there was any way of getting this feature onto my tablet?.

Thanks in advance

Scotty.
I'm the luckiest man alive!!, just a pity it's all bad luck!!.