E27 18w low energy bulb genie esaver very compact energy saving bulbs without jacket long lasting alternative to multi purpose bulbs flicker free immediate start lt1 s 85 light current after 60 seconds recommended surrounding temperature for best possible light current gt90 between 10c and 45c guaranteed ignition up to 20c colour reproduction index 82 dimensions 1 length 105 mm diameter 444 mm dimensions 2 length 115 mm diameter 444 mm dimens