Size:16CM/6.2" 9LED High brightness, using super bright imported large chip 5630SMD as light source, good heat dissipation, high thermal conductivity aluminum-based PCB board, low heat generation, low light decay, 3000 hours of zero light decay, low power consumption, only traditional lamps 10% can save you more than 90% of your electricity bill. Long life, can be used up to 50,000 hours, no radiation.