Description: 1.Wattage: 10mm tube: 13w/15W/18w/20w/24w 12mm tube: 20w/24W/26W 2.Input voltage: 220-240V, 50Hz 110-130v, 60Hz 3.Color temperature: 2700K/6400K 4.Luminous efficiency: 55-65lm/W 5.Ave. lifetime: 6000hrs/8000hrs 6.Base type: E27/ B22 7.Tube powder: tri-phosphor 8.Plastic material: PBT