 This study has developed a novel wearable thermoelectric generator, WTG, design that can be used to generate electricity from body heat. The WTG consists of a rigid device connected to flexible leads, allowing for greater flexibility than traditional designs. The study also investigates how the device's design affects its performance, finding that longer leads result in higher power generation and increased voltage. The results are consistent with simulations, demonstrating the accuracy of the model. This article was authored by Yubing Xing, Kuchintang, Jianhuang, and others.