Syska led bulb I brought after watching the advertisement, and knowing about the growing interest in the energy saving technologies. I brought 3 bulbs for my rooms and two of them have developed faults in just three days. Although it was having a guarantee mark. When I reolaced it and brought the new bulb, the same thing happened with another one. Mostly I found the cases of sysla led bulbs as a afailure and a pure wastage of money cause again and again replacement is not which can meet customer needs. It should implement more R& D before coming in market phase.