This was made for me in 2007. There's something called a Zero Field Dokko, but it's not a standard item, so I had it custom-made. It uses a gold treasure orb circuit, amplified by more than 10 times, inside a titanium nitro case. It doesn't mean the effect is 10 times stronger than the gold treasure orb. The power it exerts is even greater than that. Just holding it allows a powerful flow of ki energy, so it's recommended for those who have sufficiently trained their ki. The manufacturing cost was, I believe, around 150,000 yen (I provided the titanium nitro case myself). It's being sold because I've become unsatisfied with it due to personal preference, so the price is set lower.