鋼鉄腹筋マスター TETSU-X1

TETSU-X1是一款军事训练系统，旨在帮助用户在家锻炼出钢一般的六块腹肌。

• The description claims that it can transform flabby abs into steel-like six packs in three weeks.
• The description claims that it uses a special two-wheel design adopted by the Ground Self-Defense Force.
• The description claims that it has a scientific tracking system linked to smartphones to visualize muscle growth.
• The description claims that it can achieve 3.7 times the muscle fiber destruction rate of regular abdominal exercises.
• The description claims that it guarantees visible vertical lines on abs within 21 days and complete six-pack results within 90 days.