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: 25 pieces / PackLens: 5mm Diameter / Transparent / Straw HatEmitting Color: RedForward Voltage : DC 1.9-2VPolarity: Anode (Longer Part) | Cathode (Shorter Part)