... brightness 4.Long life 0.56 inch 7segment 3 digit red LED display Specifications: Size: 0.56 inch, other size also ... '',4'',5'',,,,,,,,Voltage: 1.8-2.3vWavelength: 46630-640nmemmiting color: red.other emmiting colors are available: yellow,blue,gren,whitePlease tell ... different display areas of equipment/machine, smart mater, electronic balance, microwave oven, induction cooker