USB Rechargeable: Fast and convenient micro-USB charging. Ultra Mini: As slim as your pinky finger, weighing only 0.46 ounces. Dual Output: Delivers two output modes from 150 lumens on high to 5 lumens on low with a quick twist. Twist to Operate: A quick twist enables you to cycle through both output modes and turns the light ON/OFF. * The micro USB charging cable is included.