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Amigo is an changable illumination tool that transforms between flashlight and headlight, Push the third and second shells into its former's inside one by one, and expose the contraction bands so that the flashlight could be transformed into a headlight. It uses bulges on the edge of a later shell and dents inside the former one to slide back and forward, rotate left to auto lock and right to free again.
SouthChina University of Technology
Baiyao Lam, Wenfeng Lam, Jiewei Pan, Peicheng Liu, Zhengdao Qi, Shishuang Li