Bluetooth is a wireless technology that allows devices to communicate with each other over short distances. Bluetooth has different versions that have different features and capabilities. Here is a brief overview of some of the main Bluetooth versions:
Bluetooth 1.0: This was the first version of Bluetooth, released in 1999. It had a data rate of 1 Mbps and a range of 10 meters. It had many issues with compatibility and security.
Bluetooth 2.0: This version was released in 2004 and introduced Enhanced Data Rate (EDR), which increased the data rate to 3 Mbps. It also improved the battery life and reduced interference.
Bluetooth 3.0: This version was released in 2009 and introduced High Speed (HS), which used Wi-Fi to achieve data rates up to 24 Mbps. It also improved the power management and security features.
Bluetooth 4.0: This version was released in 2010 and introduced Low Energy (LE), which reduced the power consumption and enabled new applications such as health and fitness devices, smart watches, and beacons. It also increased the range to 50 meters and added support for IPv6.
Bluetooth 5.0: This version was released in 2016 and increased the data rate to 2 Mbps, the range to 200 meters, and the broadcast capacity to 800%. It also added support for mesh networking, which allows devices to form networks without a central hub.
Bluetooth 5.1: This version was released in 2019 and improved the accuracy and reliability of location services, such as indoor positioning and direction finding.
Bluetooth 5.2: This version was released in 2020 and introduced LE Audio, which enables high-quality audio streaming over Bluetooth LE. It also added support for multiple audio streams, broadcast audio, and hearing aids.
Bluetooth is constantly evolving to meet the needs of different applications and devices. It is one of the most widely used wireless technologies in the world.