Specifications: Bulb Size: T-1 3/4 (5mm). LED Color: Blue. Luminous Intensity: 4.1cd. Viewing Angle: 30¡ã. Forward Current If: 20mA. Forward Voltage: 3.2V. LED Mounting: Through Hole. Lens Shape: Round. Wavelength Type: 480nm. RoHS Compliant: Yes.