8 Pack: Battery Backup LED Bulbs 9-Watt by LifeLyte (Soft White) - Ships Same/Next Day!
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The LyfeLite LED Emergency bulb works like a normal light bulb. The difference between LyfeLite and a normal light bulb is the innovative battery back up system inside LyfeLite that provides you with emergency lighting. In the event of a power outage, the LyfeLite LED Emergency bulb can stay on for up to 8 hours using its battery back up system, providing you with light in your darkest moments.