... efficacy(up to 90LM/W), excellent in brightness. NICK Spark LED PL Lamp, Smart Series1, innovative design, smart and functional; high ... (and money) saving, 60%-70% more than CFL, that is LED plug-in light with 1W equals to compact fluorescent light ... etc, for commercial lighting project.Spark LED, sparkle your green and quality life. Spark Energy Efficient LED PL Lamp, G24 Lamp, Smart Series