... 1.Stable function 2.Various emitting colors 3.High brightness 4.Long life 0.31" 7 segment 4 digits LED digit display Specifications: Size: 0 ... .31.inch Voltage: 3.0-3.5V ... , traffic indicators and moreDifferent sizes are available: 0.24, 0.25, 0.31, 0.32, 0.36, 0.51, 0.56, 1.5, 1.8, 2.3-inch and more number ...