Color:Blue Forward voltage:3.0-3.2V; Max. current: 20mA Polarity: Anode(+) (Longer Leg) | Cathode(-) (Shorter Leg) Head type: Round top led Package include: 100 pack Blue LED diodes Application: not only can they be applied to industrial segment, but also use in some students' experiment, school science, the mini LED diodes lights are good for doing projects. They are great for electronic and electrical experiments. Good repair replacement: the small diodes are convenient for DIY and repair equipment and electrical appliances, circuit unit; You can use these to make LED glow stick. Mini LED diodes with bright light: they are very bright and vibrant colors make them look beautiful at night; You can assemble different color LED diodes as you want.