4 different modes: 1. red (quick flash), 2. red (slow flash), 3. neon-rotation mode, 4. light off. Power supply mode is through a button battery (included), and the shoelaces illuminate for about 60 hours. When the battery runs out, it can be replaced with a new one, though a special tool kit is required to open the battery compartment. Suitable for various footwear such as sneakers, casual shoes, sports shoes, running shoes, boots, and skates. Easy to operate. Press the white power button on the side for different light settings and to power off. Note: Before using, please remember to remove the insulating layer, as there is an insulating film between the two batteries. Be cautious when tying the shoelaces with a bit of force, as excessive pressure may damage the LED wire inside, resulting in malfunctioning lights.