Trek Star LED Headlamp

2 1/8" x 1 1/4". Black composition housing. Black and gray elastic headband. 1 White and 2 Red LEDs. 5 modes: High - up to 140 lumen output with 4.5 hour runtime; Medium - up to 75 lumen output with 12 hour runtime; Low - up to 6 lumen output with 150 hour runtime; Red - up to 4 lumen output with 54 hour runtime; and S.O.S. Flashing. Uses three AAA batteries (not included). Hang packaged.