Check the listing for details. 3mm LED Diode Light, 20 Pcs 3V DC, Pure White Light. Condition: New, Made in China. Listed at 11.54 USD. These light emitting diodes can be used for a variety of projects, including decoration lighting, RC indicator lighting, science circuit experiments, signal indicator, illuminating keyboards, musical birthday card, science experiments and miniature parts replacement.SpecificationLight Color:Pure WhiteRating Voltage:3VCurrent: 20mAHead Size.: 3 x 3 x 5.3mm / 0.12 x 0.12 x 0.21inch (L*W*H)Wire Length: 20cm / 7.87 inchPacking List: 20 x Light Emitting Diodes with WireAdvantageThese LED diodes emit a bright light, with high reliability and low heat produced. High efficiency round light bulb. With prepared wire and a resistor, the LED light emitting diodes are ready to use right out of the box.InstructionIt is easy to use, just connect the wire to the DC power supply and it will work.