Is Bluetooth A High-end Application?

I do not know much about Bluetooth. According to my friends' talks, it sounds like something far from me -- i mean it may be a high-end use. But days ago, I found a very cheap cellphone on a website (http://www./p05i92-p-1430.html), which said the phone was also used for Bluetooth. I was astonished. Can such a price deserve Bluetooth? Anyway, what is Bluetooth, can someone tell me?

---

› See More: Is Bluetooth A High-end Application?

Are you from a primitive group? Bluetooth is nothing new in our era. USD 20 phone can also be compatible with Bluetooth. But bluetooth itself can be saparated into several grades in terms of complexity. So nothing's weard about the phone yor referred.