led digital display has following features: 1. Long life-span; 2. High brightness; 3. red, green, blue, white, yellow, etc. led digital display are available in a wide range of sizes, from 0.28" to 4". Take our 0.40", 3 digits for example. They are selectable in colorful emitting lights, such as red, yellow green, pure green, blue, white etc. Surface: Black face /Grey face with white/red segment. ...