This is quite neat. It's a clip on tuner that's quite small. And you can fold it away...
So you can fold it down when you don't need it. Because the power switch is on the back of the moving display it's easy to turn it on and fold it out at the same time.
Also you can reverse the display. Which means you can put it BEHIND the head stock.
which I find is more convenient, easier to read.
Possible downside: A is fixed at 440hz, you can't move the reference frequency around the way you can on some tuners. I've never wanted to, but I suppose that feature is there for a reason.
When folded all the way closed it's quite small.
All in all a nice, neat, simple to use tool.