Class 2 high visibility vest with USB rechargeable light 4 x high powered cool white 6500k Samsung SMD LEDs - 150 Lumen 420mAh Lithium-polymer battery Gives between 2.5 and 6.5 hours Easily removed from the vest and charged directly through a USB port Fire Retardant Can be fully charged in 4 hours Press once to turn on and toggle between 3 light intensity levels. HIGH > LOW > 2 Hz FLASH > OFF