How do I tell the difference between i-Controller and i-Controller 2.0?

The simplest way to tell the difference is that i-Controller has a separate display called a Visograph and i-Controller 2.0 has a built in display.

How do I tell the difference between i-Controller and i-Controller 2.0?

The simplest way to tell the difference is that i-Controller has a separate display called a Visograph and i-Controller 2.0 has a built in display.