• Reduce running costs by 30%• Same size as a regular incandescent reflector• Instant light•2 years' average lamp life (Based on 3 hours' use / day) • Dimmable, unlike CFL's• Twin pack• Edison Screw (E27) Fitting Energy Saving Halogens, or often called Eco Halogens differ to traditional incandescent lamps by using a more economical Halogen filament contained within a traditional glass envelope. The benefits of using Eco Halogen bulbs are;• Lower wattage than normal incandescent bulbs, using typically 30% less energy • Outstanding quality of light (CRI of 100)• More appealing aesthetic than some compact fluorescent lamps (CFLs)• Fully retrofit to traditional bulbs• Longer lifespan, typically 2, 000 hours • Compatible with dimming systems• No mercury or hazardous materials