C Series Emergency Bulb
1.LED emergency light bulb with Built in Self-Rechargeable Battery for Power Outage
2.It can last up to 3 hours of uninterrupted use after a power outage
3.Installs in any standard household medium base socket
4.In the event of a power failure, the LED bulb will turn ON automatically. That is, when the switch is ON and mains power goes off the bulb will detect that and turn ON. If the switch is OFF bulb will not turn ON. When mains are ON and the switch is ON the bulb will start recharging again.