1.GU10-A can ecnimize electricity 80% 2.life span is8000hours 3. ... hours,save electricty rate:80% ,rated power:7w5.Color-temperature:2700k-6400k 6. Length*Width:72*50 MM Luminous Flux:150LM ... , art hall, museum, office, reading room, showcase, entertainment place etc. 2700K GU10 style enegy saving devices