Single switch adopted = simple operation stress ZERO specification.Wide irradiation with a wide irradiation surface.Can be used for a long time.Recommended for a wide range of people!Brightness about 230 lumens.Color black Light source used SUPER LED White ? 1.Battery used AAA alkaline batteries x 3 (sold separately).ZEXUS dedicated battery ZR-01 (sold separately).Lighting time HIGH mode: About 4 hours;LOW mode: about 50 hours.Visual distance about 100m.Waterproof performance equivalent to IPX4