Our LED bulbs are designed to survive the harsh Aussie conditions. The shell is made from a smash proof polycarbonate material which come in colours and a clear option which looks just like glass. Like all LED, the more you use the lights, the more they will dim. This is another benefit of these lights as you won’t see blown bulbs! They just dim over time, as they are used. If you are wanting the lights for a commercial space and are expecting to have them on from 10-12 hours per day, 7 days per week, you should expect to get at least 2-3 years out of the lamps before they need replacing. They should continue to work past this point however they won’t be providing as much output.