Half-spiral dia 9/dia 12 Wattage for HS/dia 9: 5W, 7W, 9W, 11W, 13W, 15W. Wattage for HS/dia 12: 28W, 36W. Lamp Cap: E27/B22. Voltage: 110V/220V-240V. Frequency: 50Hz/60Hz. Color Temperature: 2,700K/4,000K/6,400K. With high quality Tri-color Tube. Life Time: 8,000 Hours.