How much screentime is enough for kids

As parents when raising up kids managing the amount of time they spend watching TV is extremely important, how much screentime do you think is enough when raising up a kid, and how much screentime is considered as too much?

I think 2 hours in a day is sufficient for them.

It is a tricky approach because we can't approach it the same way for all children, especially with so many gadgets around kids today. I think 2 hours sounds reasonable for kids so that it won't take away other life responsibilities. It's even good to mix entertainment mixed with learning.