... sources, it has unparalleled advantages:1. High purity, bright and rich colors;2. Super lifetime;3. There is no ... light source;4. Solid light,good seismic performance, solid and reliable;5. Energy, economy, maintenance-free;6. Dynamic color control, ... adjustable brightness, three-color combinations of LED can be used to changes colors freely with PWM. 2012 Long life span energy-saving lamp(HMD30W)