Description: 1.Wattage: 9mm tube: 5W/7W/9W/11W/13W 12mm tube: 15W/18W/20W/24W/28W 2.Input voltage: 220-240V, 50Hz 3.Color temperature: 2700K/6400K 4.Luminous efficiency: 55-65lm/W 5.Ave. lifetime: 6000hrs/8000hrs 6.Base type: E27/E40/B22 7.Tube powder: tri-phosphor 8.Plastic material: PBT