... available: 1.9mm Φ3.0,Φ3.7,Φ5.0,Φ7.62, Φ10 Dots :5" x 8", 5" x 7", 8" x ... power consumption 4. Solid-state LED chip based 5. Long life-span for 50, 000 hours 6 ... colorRedWavelength625~635nmVoltage1.8~2.1VSurface colorBlack/GrayEmitting ColorSuper Bright RedPixels Pitch More Specifications:Inter size: φ1.9mm, φ3mm, ... 50mm etc.For 5x8 dot matrix Single color, dual color, full color (RGB Color)23.50x37. ...