<p>The design of flexible conductors with large stretchability, high conductivity and extended life for flexible electronics remains a big challenge. In this paper, a flexible conductor with the aforementioned characteristics is proposed and experimentally validated. The conductor adopts a structural configuration of wavy copper wire embedded within a silicone rubber matrix. To systematically evaluate its tensile performance and electrical properties, a comparative analysis was conducted against two representative structural designs, focusing on both sets of properties. The experimental results show that, in terms of tensile properties, the strain of the proposed conductor can reach 40% under the same mechanical load, which is about 30% higher than that of the other two conductors; on fatigue life, it has not failed after 7000 loading cycles, while the other two conductors cannot endure even 3000 loading cycles; in terms of electrical performance, it can maintain a high and stable conductivity before failure. Additionally, finite element analysis of the tensile performance of the three designs is made to aid understanding. Finally, this paper provides the application potential of the proposed flexible conductor through three application scenarios: lighting up a LED as a stretchable conductor, and working with a sensor on a soft pneumatic actuator and as a wearable electronic. It can be seen that the new flexible conductor has the advantages of simple structure, simple manufacturing process and low cost. This investigation provides a new way for the development of flexible conductors.</p>