This industrial powerhouse lights the way with an amazing 150 hours of run time. LED bulb lasts 100,000 hours. Three-foot drop tested. Easy twist on-off switch. Battery Type: Alkaline Flashlights Type: Industrial Power Sources: 2 D Sold Separately.RAYILED2D. ILED2D. Ray-o-vac Ray-o-vac Industrial LED Flashlight with Twist On-Off Switch.