AS a professional diving flashlight, XTAR D26 utilizes the latest premium CREE XM-L2 U3 LED with max 1100lm. Great sealing function achieves 100 meters diving depths. You can choose modes including High-Turbo-Mid-Low. Power indication will mind you if your battery power is enough. When batteries capacity is above 25%, the LED indicator is green on; battery capacity falls at 5%-25%, the LED indicator is red on; battery capacity falls below 5%, the LED indicator flashes red. With a 18650 or 26650 high capacity battery, D26 allows you to have a long diving time.