Watt: 3w/5w/8w Spec: General bulbs/candle bulbs/pear shape bulbs Voltage: 110v/220v Length: 100mm Lumen: 60lm/w Life time: 25000hrs Color temperature: 2700k-6500k This cold cathode lamps use triphosphor, adopting high new technology, and many color temperature available, it's high brightness and long life, suitable for lighting in various place.