EcoClassic Halogen Candle 28w offers similar light output to a standard incandescent candle 40w with less power consumption. 346lm Lumens (lm) are a measure of light output to compare different lights. Watts (w) are a measure of electricity input. Different lamps can deliver similar lumen outputs from various watts input. This 4 EcoClassic lamp delivers 346 lm with 28 watts. Warm white 2700k 2000h Average lifetime of 2,000 hours in residential use. Dimmable from 0 to 100% of light output. Set output to meet your needs. This lamp is compatible with all residential dimmers. Lamp can be switched on and off at least 8,000 times. Instant start to offer brightness from the moment the lamp is switched on. Lamp base has a 240 volt BC or B22 cap. Bulb is too hot to be touched with bare hands.