Smart Bulb charges while used as a regular bulb. In the case of a blackout, the bulb will continue to operate for 5-8 hours on constant power.
This energy-saving bulb has a 50,000-hour lifespan versus the common incandescent bulb that only lasts 1,000 hours, which means that the Smart Bulb is equivalent to replacing 50 incandescent bulbs.
Based on average consumption, the bulb will last you at least 25 years, which truly makes it a forever bulb.
Each bulb provides $280 in lifetime energy savings due to consuming only a fraction of the power used by an incandescent bulb, this calculation does not include the cost that would be saved to replace 50 incandescent bulbs.