A specialized book explaining the entirety of the quantum wave device "Metatron" and how to use it. - Title: All About the Quantum Wave Device 【Metatron】 - Authors: Satoshi Utsumi, Mario Naito, Toshiaki Yoshino, Tadahisa Yoshikawa - ISBN: 9784864714976 - Publisher: Tama Publishing - Number of pages: 224 I bought this when I purchased the Metatron. I believe the field of quantum waves will become commonplace in the future. Thank you for viewing. I'm looking at this in between work, so I'll reply as quickly as possible, but it will take 1-3 days to ship. It will take 4-7 days when I am on a business trip or away from home. I will ship in a compact manner. Thank you for your understanding. I am not negotiating prices. Please purchase at the listed price. Based on Mercari rules, I will give priority to the person who purchases, even if negotiations are in progress. Thank you for your understanding.