Feature: 1.Useful and fashionable 2.Suitable for any kinds of Shoes, including running shoes, boots and skate. 3.Awesome and Eyes-catching Great for the parties, night jogging, safety and all kinds of night time fun How to Use: Install 1x CR2032 button cell battery into each control box. Lace up your shoes with these 2 shoelaces. Insert the top of each lace into the 2 holes of the control box, switch the lock to "lock"mode. Push the white button in turn to control the lights: on/flash/strobe/off Material: LED + High articulation plastic fiber. Color: green, orange, blue, red,pink,multicolour Power: 2 * CR2032 button battery (included). Size: Approx 80 cm/31.5in Weight: approx.30g Modes:Steady On/fast flash/normal flash. Package list: 1 Pair Of Shoelaces