By Andrew Liszewski
Shown at IFA, a Chinese company called Magic Bulb has created an LED bulb that not only uses just 4 watts of power to produce the equivalent amount of light as a 50W bulb, but it also features a built-in rechargeable battery that will keep the light running for an additional 3 hours should the power go out. And if the power outage is the result of an emergency requiring you to ‘escape’ your home or office, the bulb can be unscrewed and the neck extended to create a handheld flashlight. If and when the bulb is available in your part of the world it’s expected to sell for somewhere between $30-40, and it will be rated with a lifespan of around 20,000 hours.
i like this but dont they have something like this already.