Features: Super glowing in the dark, this LED band provides 360 degree ultra-high visibility in dark and nighttime activities. This band provides great safety protection for you, your children or your pet from negligent and distracted drivers. Multi-purpose, You can not only use it as a sport band, but also wear it for night activity, such as your favorite singer's concert or campfire evening party and etc. Replaceable battery, each LED bracelet comes with 1 small button battery. When the battery is exhausted, you can replace it with a new one.