Features • Batterylock™ • 4 Modes: High/Medium/Low/Flashing • 550 lumens on high, 200 lumens on medium, 50 lumens on low • 10 hrs of runtime on high, 75 hours on medium, 300 hrs of runtime on low • 13 meters on high, 6 meters on medium and 2 meters on low • Operates on 4 D batteries