• nylon
• Battery : about 20-30 hours,warning LED wristband,light-emitting armband
• Light-emitting armband:a road guider for and old people when going for a walk or dark places,wristband for sports
• Armband:equipped with a luminous reflective lattice, for better ensuring your security at night,light-emitting armband
• Wristband:also suitable for outdoor sports, night running, large-scale festival party, concert, , cheer, employee benefits, corporate events and so on,light-emitting armband
• 3 working modes for choice: steady on, fast flashing, slow flashing,wristband for sports,light-emitting armband