Discharge bulb powerball hci ts osramthe powerball hci ts bulb is a double sided discharge bulb in the powerball technology patented by osram through its round ceramic burner it offers even better performance in the light colour and stability as well as a longer average lifespan of 12 000 hours very good colour reproduction and colour stability are guaranteed throughout the entire life cycleproduct advantages high efficiency thanks to optimized light yieldbest colour reproduction and col