1. Light source adopts United State CREE brand, XML-U2 white light LED, high light efficiency, low energy consumption, life up to 100,000 hours. 2. Button operation: First gear 100% high light; second gear 30%, low light; third gear is power off. Long time press will be non-gearable dimming light, release button when the light’s brightness is suitable. 3. IP68, Professional diving design, diving depth is 60 meters under the water, radiation distance is 90 meters, waterproof level:IP68 4. Vacuum plating aluminum technology for reflector cup, high reflection efficiency, uniform light spot color 5. Marking for anti-explosion:Ex dIICT6 Gb, can be used safely in all kinds of inflammable and explosive places