【Material】: The emitting diode lamp beads are made of resin and silver-plated iron. They are high temperature resistant, have a strong refractive index, no bubbles or impurities, and provide high brightness. 【Long Life and High Efficiency】: This LED lamp bead features built-in ESD protection and high light efficiency to ensure a long service life. 【Multifunctional Application】: LED diode lights are suitable for home lighting, car decorative lighting, advertising displays, smart home systems, and digital applications. 【Easy to Install】: 10mm round head lamp beads are easy to weld and offer good heat dissipation performance. 【Size】: Round head straight plug LED lamp beads, 5.16mm x 5.16mm x 3.165cm / 0.20inch x 0.20inch x 1.25inch. Specification: Operating current: 150 mA Overall dimensions: 10mm Voltage: 1.8-3.4 V Lighting angle: 30° Power: 0.5W Luminous efficiency: 45-50 lm Model: 10mm round head lamp beads Size Chart: 5.16mm x 5.16mm x 3.165cm / 0.20inch x 0.20inch x 1.25inch Package Includes: 100 pieces 10mm round head lamp beads Note: Please allow slight measurement deviations of 1-2cm due to manual measurement.