These M42 G4 20 watt 12 Volt Energy Saving Halogen Capsule Bulbs from Knightsbridge are ideal for a range of home and commercial lighting applications due to their clear finish and warm white light output. Double Fused Tungsten Capsule Lamps on a G4 base benefit from tungsten halogen cycles which extend the bulbs life for a long period of time, and the quick-fit pin cap makes for a reliable & instant use product from a quality brand name Main Features: Halogen Capsule Bulb G4 Base Warm White Colouring 12V Operation Technical Specification: Base: G4 Operating Voltage: 12V Wattage: 20W Colour Temperature: 3000°K (Warm White) Colour Code: 830 1 Year Guarantee Included