The filaments utilise a copper substrate as a lead frame, enabling better heat dissipation and a more reliable performance. Similar to sapphire substrates, the luminous efficacy of the filaments can reach 125lm/W (under 2700K, with a CRI higher than 80).
With the filaments, LED bulbs can provide the same lighting effect as incandescent bulbs, but at a lower price and with a longer lifespan of up to 25,000 hours.
