RL44 button cell. According to relevant data, Faye Wong's belt is a deformed toy belt under the Kamen Rider Film and Television Company. The raw material is aluminum alloy, which has the characteristics of good wear resistance, good rust resistance and long service life. The market price is 2340 yuan. At the same time, the belt is made of button cell instead of conventional batteries, and the belt is made of RL44 from button cell.