Defination:

Bluetooth is a way to connect and transfer information between mobile phones, laptops and PCs, printers, digital cameras, and video game consoles by using secure radio frequencies. Bluetooth is a technology of short-range communications, wherein the cables connecting portable and/or fixed devices are replaced while maintaining high levels of security.

Bluetooth is a way to connect and transfer information between things like cell phones, laptops and PCs, printers, digital cameras, and video game consoles using radio frequencies securely.

According to the official Bluetooth site, “Bluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable and/or fixed devices while maintaining high levels of security. The key features of Bluetooth technology are robustness, low power, and low cost. The Bluetooth specification defines a uniform structure for a wide range of devices to connect and communicate with each other.”

Features:

Synchronization:

This technique requires a docking station or line of sight for the infrared signals. With Bluetooth technology, information such as your phonebook, calendar and messages can be sent from your PDA to all your other gadgets.

File transfer:

A picture taken with your mobile phone can be transferredto your PDA by using this technology, wherein the user to pressonly a few buttons. The same device can also be used to browse documents on another gadget.

Multi-use telephone:

There are some Bluetooth headsets, which allow the user to use the phone in three different ways. It serves just like a cordless phone, wherein you’ll be able to receive calls that you get on your regular phone line. This headset can also be used just like a cordless phone to communicate with other phones in the house, like an intercom or walkie-talkie, besides having the ability to receive calls that you get on your mobile phone.

On receiving data via Bluetooth, a message alert tone is played where the user is asked whether or not the message is to be accepted. If yes, the item is placed in the Inbox folder in messaging.Bluetooth technology uses radio waves to send information between two devices that are close to each other. Unlike traditional radio waves, Bluetooth waves typically can only travel 33 feet or less

Types of Bluetooth:

Bluetooth is used is mobile phones, headsets, headphones, MP3 players, computers, boom boxes, laptops, computer mice, GPS units, and car stereos. Almost any Bluetooth device can be paired with another Bluetooth device in order to exchange information.

Range:
The operating range depends on the device class:
Class 3 radios – have a range of up to 1 meter or 3 feet
Class 2 radios – most commonly found in mobile devices – have a range of 10 meters or 30 feet
Class 1 radios – used primarily in industrial use cases – have a range of 100 meters or 300 feet
Power
The most commonly used radio is Class 2 and uses 2.5 mW of power. Bluetooth technology is designed to have very low power consumption. This is reinforced in the specification by allowing radios to be powered down when inactive.

Data Rate
1 Mbps for Version 1.2; Up to 3 Mbps supported for Version 2.0 + EDR