Glowseen USB Rechargeable LED Backpack Band Light - Make Your Backpack Light up -Compatible for Most Backpacks (Green) Be seen Be safe! Make your normal Backpack become light up one so that can be easily spotted in the dark Easy to attach to backpack with elastic strap . LIGHTWEIGHT & ADJUSTABLE, BUT STURDY AND DURABLE. Compatible For All most Backpacks USB RECHARGEABLE BATTERY: Android Interface and Micro USB Cable, 200mah Rechargeable Battery, No More Buying and Replacing Batteries, Save Your Money and Micro USB Cable can be Use Universally 3 FLASH MODE: One Button Switch, Easy to Fold and Carry. Constant Bright-Fast Flash-Slow Flash Suit for Coping Different Situations UNLIMITED APPLICATIONS: No Matter if is Raining, Snowing, Getting Dusk or Dawning, It Provides A Lot More Awareness to Drivers, Motorcycles, Police & Military When you wear your backpack for Walking, jogging Running, Hiking, Cycling