The Osram Dulux Superstar Circolux is a bright energy saving bulb. It is characterized by warm, pleasant light bulbs. In addition, it provides excellent color reproduction and an ideal light distribution for general lighting. Thanks to the round and flat form the Osram Dulux Superstar Circolux is ideal for pendant lamps. Low weight. Comfort and economy features as OSRAM DULUX EL Longlife. Suitable for direct current operation. up to 15 years life (approximately 2.7 hours burn time / day). with approximately 500,000 switching cycles * and a long average life of 15,000 hours.