The bracelet wrap around without buttons or Velcro so that it fits various sized wrists or ankles, both kids and adults.
4 modes: Fast flash, slow flash, full illumination, and power off.
Come with 8 extra battery. It can be used after changing a new battery. This allows you to enjoy it year after year with up to 80 hours of continuous use on a single battery
7 armbands in one pack.You can get 7 different colors via one purchase. TPU coating on the front and back side in order to improve its rainproof and sweat-proof ability.
High visibility protects you, running, riding or going for a walk at night,concert, camping etc outdoor sports