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.
