Led Diode LightsProduct 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. ParametersHead Type: Round, RedLens: 3mm Diameter / Red / RoundHead Material: PlasticPin Length: 29mm/1.14"; 27mm/1.06"Forward Voltage: DC 1.8-2VPolarity: Anode (Longer Pin) | Cathode (Shorter Pin) Packages: 30 pcs (All red light)