It is priceless and useful product.One of the main feature of this bulb is that it save electricity and give bright light.Its life time is also long.It is cheapier than other bulb and also save my money.It do harm the environment like other.It is eco friendly and do not emit any type of harmful rays in atmosphere.these bulbs are easily available in market even we can buy more cheaper on online marketing I like this bulb most as its brightness and long life line is more than other.I generally prefer this bulb when there is need.