Shinwoo Zan Navi
From YoYo Wiki
The Zan Navi by Shinwoo is perceived by some to be a Korean Duncan Throw Monkey. With rubber over-sized rims, it was sold with a counterweight in markets outside of the United States. (Inside the US this would violate the Duncan patent.) However, it is different from the Throw Monkey primarily because of its more angular shape. Another very neat feature that comes with the Zan Navi is the spacers. They flip so as to change the size of the gap changing it from a tug responsive yo-yo to an unresponsive bind responsive yo-yo. The response system is also very unique. The same rubber that serves as the rims apparently doubles as the response system, which looks very similar to a friction sticker, except for the fact that this is a response system that you do not have to replace
