This Osram Sylvania ESB / FHE bulb is a 20 watt, 6 volt HLX lamp. It has a base of G4 2-Pin, a shape of T3.5 and a rated life of 100 hours. It has a maximum overall length of 1.209 inches, lumens of 480, and a clear lamp finish. This Osram Sylvania ESB / FHE bulb has a diameter of 0.351 inches and a color rendering index of 100. This bulb can be used for the following applications: - Commercial Theaters - Museums - Landscape lighting - Living rooms and more Abbreviation Name ESB64250HLX Base G4 2-Pin Bulb Type Halogen Bulbs Color Rendering Index (CRI) 100 Diameter (in) 0.351 Lamp Finish Clear Luminous Flux (LM) 480 Maximum Overall Length (in) 1.209 Rated Life (Hours) 100 Shape T3.5 Voltage (V) 6V Wattage (W) 20W