Not all filament LED bulbs are the same. Our sapphire based filament LED bulbs are guaranteed for 2 years. Only we can do this because they have been constructed to actually achieve the lifetime we have stated. Other cheap filament LED products cannot do this. There are several factors:
- The filament LED will burn-out if heat is not dissipated correctly. We do this with argon filled bulbs, other cheaper un-branded products do not do this so will not last the lifetime they have stated.
- We use branded Epistar Sapphire based LED chips, rated at the highest energy efficiency of A++
- Our IC driver is a long-life reliable, constant current driver, designed to cope with voltage spikes and using quality electrolytic capacitors.