... emission4) Energy saving up to 85%5) Instant lighting-on with no flickering, no delayLong lifespan of Led Tubes:led bulb ... Lamp10,000-15,000Energy Saving bulb internal electronic ballast2,000-16,000Energy Saving bulb external electronic ballast5,000-12,000CDM-T lamp ... electronic ballast5,000-10,000 Energy Saving:A LED ...