... 5000-6000k 7.LensAngle:>180° 8.Lumen efficiency:90-100LM/W 9.Life Span: over 50000hrs 10.Heat-sink: aluminum ... desired options!Feature: 1.Energy efficient: LED energy saving lamp consumes less than one-tenth the power consumption of ... , hospitals, factories, offices,commercial buildings, office buildings,for the desk lamp, stair lighting.(C)the municipal lighting, banking, infrastructure, stadiums, ...