1.high quality museum led track fixture 2.355 degree horizontal,90 degree vertical adjustable 3.high light efficiency Specification sheet Model NoCEL9137CEL6207MCEL9207Light ParametersLED SourcePhilips LumiledsPhilips LumiledsPhilips LumiledsPower4*1.5W 4*2W 4*2W Color Temp.2700K / 4000K / 5600K2700K / 4000K / 5600K2700K / 4000K / 5600KLight ColorWarm white / Natural White / Cool WhiteWarm white ...