It works well. With my amp (Roland Cube 30), you can use A to turn effects on/off and B to switch between the clean and lead channel. It needs a 9V battery, but it comes with one. Seems solid, it came today so I can't review the durability. It's quite small, I put a guitar pick next to it for comparison. It's about the size of your hand, which is nice if you have a pedal board. Overall it's a great product and I would recommend.
It works well. With my amp (Roland Cube 30), you can use A to turn effects on/off and B to switch between the clean and lead channel. It needs a 9V battery, but it comes with one. Seems solid, it came today so I can't review the durability. It's quite small, I put a guitar pick next to it for comparison. It's about the size of your hand, which is nice if you have a pedal board. Overall it's a great product and I would recommend.