With a life of 15,000 hours, the GU10 LED bulb will last over 13 years (based on 3 hours of use each day) Provides 230 lumens of light instantly (equivalent to 35W), with no waiting time to warm up to full brightness With a colour temperature of 3000K, 4000K or 6500K, the bulb provides a light (warm white, cool white or daylight), creating a comfortable atmosphere in any room Using 2.4 watts of energy, Energy Rated E and just £0.66 per year to operate, this bulb saves over 90% (£8.92 per year and £122.25 over its lifetime) compared to its incandescent equivalent (based on 3 hours/day, 0.25 £/kWh; may vary depending on rates and use). This is just one bulb, 4 bulbs would save you £35.70! High colour rendering (CRI > 80) provides vivid and natural colour; beam angle of 38 degrees for a focused bright beam Available in Non Dimmable only (does not work with dimmer) Our bulbs are made by a well known brand - trusted by millions. UK CA and CE Certified. Mercury Free, Manufacturer: Energizer