Product Name: Circular Fluorescent Light BulbModel Number: GLT-CPlace of Origin: ChinaFeatures: 1) Tricolor phosphor 2) Light efficiency: more than 55LM/W 3) Luminous flux maintains 90% for 1,000 hours, and 80% for 2,000 hours 4) Normal starting type, high quality filament 5) Voltage: 110V / 220V 6) Frequency: 50Hz / 60Hz 7) Color temperature: 2,700K / 4,000K / 6,400K / 10,000K 8) Average usage life: 5,000 - 8,000hrs Inner packing: Color box with blister pack Outer packing: Carton