The UST Jolt Mini USB LED light is an easy to use, portable, rechargeable key chain light. The Jolt comes in multiple colors, and is housed in a rubberized ABS plastic case that will stand up to your daily rigors. The Jolt is easy to charge, simply plug it in to any USB power source and wait until the light turns from red (charging), to green (fully charged). The Jolt includes three modes, On, Off, and Flashing.