Product details: Model: 4 CR2032 button batteries Shoelaces use high-quality LED lights, long life, good endurance Quality assurance-using high-quality nylon rope as raw material, suitable for various environments Luminous mode-The flash mode is divided into three levels of design: constant light, fast flash and slow flash to meet various needs of different scenes Controllable switch-high switch sensitivity, long life, a new generation of switches more user-friendly
