XZhiM&reg; 12 leds LED Illuminating Glowing Suspender Adjustable Super Bright and High Visibility Safety Gear for Sport&Cycling Night Show(Blue) 12 Super Bright leds, Be seen in the dark be safety when You are Wearing It For general people who wear it , 8 led lighting points can be seen at the front side, 4 led lighting points can be seen at the back side Adjustable with clip and elastic strap ,Lightweight, versatile and comfortable Power by 2 PCS CR2032 cell battery ( included); Battery drawer design ,easy to replace the battery easy to use and 3 flash mode: Easy-to-use, just click to change the Light Lighting /Quick Flash/ slow flashing Unlimited Applications for safety and glow in the dark. It Provides A Lot More Awareness to Drivers, Motorcycles, Police & Military When Walking, jogging Running, Hiking, Cycling, Horseback Riding or Motorcycling