Philips high-pressure mercury vapor lamps HPL 50Watt E27 125Watt E27 Technical specifications : Luminous flux in lumens 50W : 1770 80W : 3600 125W : 6700 Dimensions : 50W length 129 width 56 mm 125W length 173 width 76mm Energy efficiency class : B Lifetime 50% failure rate: 50W 16000h 125W 24000h Color temperature: 50W 4200K 125W 3400K Warning: The lamp contains mercury and must be disposed of separately. It must not be disposed of with household waste!!!