Zebralight S6330 Triple 18650 Triple XM-L 2400Lm Flashlight 3 main User Selectable Levels (High, Medium and Low). Each main level can be configured to one of its two sub-levels. The second sub-level of the High (H2) can be further configured to different brightness levels or strobes. Three independent battery power channels for ultimate battery safety and flexibility (mix and match any 1-3 batteries). This light uses the LEDs to indicate the estimated remaining battery capacity by flashing 1 to 4 times. To start the battery indicator, short-click 4 times without pause from OFF. Smart user interface provides fast and easy access to all brightness levels. All levels are current regulated. Ultra clear lens with anti-reflection coatings on both sides Waterproof to IPX7 (2 meters, 30 minutes)