Portland Design Works Lars Rover 450 USB Hi-Powered Head Light 5 modes (burn time): 125 lumens (7.5 hrs.), 250 lumens (3.75 hrs.), 450 lumens (2 hrs.), fast flashing (10 hrs.) and pulse (10 hrs.) Additional 15 minutes of low power safety mode after low battery indicator light comes on Genuine Panasonic Li-ion battery, CREE LED, Texas Instruments integrated circuit Light wakes up in last mode used Delayed power switch; 1 sec delay to prevent accidental on/off USB charging, USB cord included, 5.5 hour charging cycle