Disassembled 10-watt LED light bulb (810lm) manufactured by Fabryka Zarowek Helios Sp. Good quality for it's price 9.50€. There were found out next properties during examination: *Advantages: ** flickering are totally missing - safe for eyes ** cosφ=0.73 ** very good heat dissipation ** protection against overvoltage *Disadvantages: ** too heavy weight (~1KG)