Disassembled 5½-watt LED light bulb (400lm) manufactured by EMOS lighting. Low-quality product for 9.80€. There were found out next properties during examination: *Advantages: ** very good heat dissipation: I couldn't melt soldering alloy even applying +500°C ** cosφ=0,63 *Disadvantages: ** too strong flickering - extremely harmful for eyes ** power supply consists only of lowering capacitor