Halogen Bulb, 120-130 Volt, 1000 WattShape: T3Base: R7sRecessed Single Contact, Double EndedLength: 189mmDiameter: 10mmVoltage: 120-130 VoltWattage: 1000 WattHours: 2000 HoursType of Bulb: Halogen (Clear)Halogen lamps deliver a crisp, white light, not only you get more light per unit of energy than a standard incandescent of comparable wattage, but the quality of the light creates a higher contrast for reading and other tasks this also makes halogen perfect for work lights, lighting display cases, accent and general lighting.Standard incandescent lamps and halogen lamps both use tungsten filaments. However, the filament in the standard lamp evaporates over time, causing it to weaken and eventually break. The gasses inside halogen lamps allow the evaporated tungsten to find its way back to the filament and redeposit, ensuring a long life of 2,000 hours or more.