1.Solid, durable, extend strong 2.Power: 2xCR2032 3.Water resistent 4.2 bright LED bulbs, brightness: 13000-15000mcd ... temperature below 20 degreeLight SourceUltra bright white led × 2 ,13000-15000mcdLifetime100,000 HoursCurrent100mA Power SourcePower2xCR2032 batteries FeaturesFeaturesCompact ... PackagingPackage Included1 x Bicycle Lamp1.2 Super White Bright LED Lights 2.3 Kinds of switch:full light ...