Product descriptionWide applications, most commonly for:DIY LED ProjectsDIY CardsSmall Science ExperimentsParty DecorationsSignal IndicatorElectronic and Electrical Experiments, Etc. Features:Ultra Bright Lighting,Low Energy Consumption And Low Heat. Specification:Quantity: 7 pieces / PackLens: 5mm Diameter / TransparentEmitting Color: Red/Emerald GreenForward Voltage : Red: DC 1.8-2v; Emerald Green: DC 3-3.2VPolarity: Anode (Shorter Part) | Cathode (Longer Part)