1.Digits size range : 0.28inch to 2.3inch 2.series of color can be selected 3.OEM of LITEON Dual Digits size :0.28inch,0.3inch.0.31inch,0.36inch,0.39inch,0.40inch,0.43inch,0.50inch,0.52inch,0.53inch,0.56inch,0.8inch ,1.0inch,1.8inch,2.3inchEmitting color : red .green .bule.white .amber .yellow .orange Surface color : black / gray 6years warranty .OEM of LITEON