... 0.96Lamp luminous flux: 6580 LmPower supply efficiency: 91% min.Lamp light efficacy: 70 Lm/WEccentric angle: 11 degreesLight extraction efficiency ... humidity: 10%- 95%Life span: More than 50,000 hours Lamp size: 620mm×321mm×121mmNet weight: 11.7kgsCarton size: 700mm×410mm ... : subsidiary road, branch road, park pathway, residence areal road, commercial street, square, etc.