1.Small size,no black spot and shady area,good for down light . 2.With execellent tri-color tube,hight lumens and low light ModelFG-3U-3Diameter12mmSupply Voltage112-130v/50-60HZ,220-240V/50-60HZColor TEMP2700K/6400KBase TypeE27,B22Watts15w,18w,20w,26w,30wPack Size51x26x19.2CM/5OPCS