Sports music player ---- Creative products ---- Kupin.com

The music player "quantifies" the energy consumption of exercise through a unique charging device, urging users to stick to exercise and keep in good shape. In fact, the principle is very simple. This music player is divided into three parts: headphones, player and energy source, and its energy is derived from the wearer's exercise. The more time and distance you jog, the more power you can charge the player and the more songs you can listen to. In this way, how many songs you can listen depends on how far you can run!