3. Battery: Each shoelace use a CR2032 coin cell battery. Under the long bright circumstances continuous discharge 30 hours・ flashing or intermittent discharge is 60-80 hours・ normal use 2-3 months・ you can replace the battery yourself.
4. Instructions: After lacing the shoelaces・ shoelaces ends through the hole lock and insert into lighting hole・ then rotate to LOCK. Press the middle button・ press once long bright・ twice quick flash ・ three times to slow flash・ four times that close.
5. Suitable for outdoor sports・ night running・ a large festive party・ concert・ cheer and other activities.
