This is the 150 watt halogen light bulb. It is a low to medium voltage with reflector. The EKE lamp can be used in many different ways. It is most common in projectors fiber optics microscopes and endoscope lighting. The MR16 shape has an outstanding focus beam bright light and remarkable color rending the PLATINUM EKE bulb is an excellent choice. PLATINUM offers the same outstanding performance and offer a more competitive price than the major manufacturers. Abbreviation Name EKE Ansi Code EKE Base GX5.3 2-Pin Bulb Type Halogen Bulbs Color Rendering Index (CRI) 100 Color Temperature (K) 3300K Diameter (in) 1.989 Filament CC-8 Lamp Finish Clear Maximum Overall Length (in) 1.765 Rated Life (Hours) 200 Shape MR16 Voltage (V) 21V Wattage (W) 150W