Disassembled 5.5-watt LED light bulb (400lm) manufactured by PHILIPS. Low-quality product for it's high price 11€. There were found out next properties during examination: *Advantages: ** modern design ** small dimensions ** light weight ** low level of flickering *Disadvantages: ** cosφ is only 0.544 ** too small heat sink ** power supply is arounded by heat sink, which may injure it by high temperature