More information about Bluetooth

• Astrum
• Asus
• Chronos
• Eaton
• Geeko
• Logitech
• Microworld
• SonicGear
• TP-link
• Unbranded
• Unique
• Verbatim
• WINX
• Zoweetek

• Computers and laptops to speakers
• Mobile phones to headsets

Pairing

In order for two deices to connect via bluetooth, they need to be paired

High quality audio streaming

Bluetooth allows for high-quality digital streaming between a device and a headset or audio device.

Bluetooth standards

• Bluetooth 1.x Nearly extinct; if at all you find a device which is advertised as 1.x
  
  Capabilities - Basic rate bluetooth (that would be about a theoretical maximum of 1 Mbps data rate)
  
  
• Bluetooth 2.x The most popular variant, especially 2.1. The 2.1 version makes it easier to pair with different devices (even from different manufacturers) and also increases the reliability per se of the pairing process. Introduced the Enhanced Data Rate (EDR) capability (optional).
  
  Capabilities - Basic rate + EDR (that would be about a theoretical maximum of 3 Mbps data rate; optional)
  
  
• Bluetooth 3.x Introduces support for an alternate lower layer, i.e. all the applications that were available with Bluetooth radio earlier can be run over an alternate radio, say like the 802.11 one. This feature is called High Speed (HS), and as the name suggests that was the intent and purpose. The HS feature is optional too.
  
  Capabilities -  Basic rate + EDR (optional) + HS (optional) Maximum 25 Mbit/s - 10 meters (33 ft)
  
  
• Bluetooth 4.x Introduces support for collecting data from devices which generate data at a very low rate. The main intent of this feature, called Low Energy (LE), is to aggregate data from various sensors, like heart rate monitors, thermometers etc.Maximum 25 Mbit/s - 60 meters (200 ft)

• Bluetooth 5.x With 4x range, 2x speed and 8x broadcasting message capacity, the enhancements of Bluetooth 5 focus on increasing the functionality of Bluetooth for the IoT. Maximum 50 Mbit/s - 240 meters (800 ft)

•     Wireless control of and communication between a mobile phone and a handsfree headset.
•     Wireless control of and communication between a mobile phone and a Bluetooth compatible car stereo system.
•     Wireless control of and communication with iOS and Android device phones, tablets and portable wireless speakers.
•     Wireless Bluetooth headset and Intercom. Idiomatically, a headset is sometimes called "a Bluetooth".
•     Wireless streaming of audio to headphones with or without communication capabilities.
•     Wireless streaming of data collected by Bluetooth-enabled fitness devices to phone or PC.
•     Wireless networking between PCs in a confined space and where little bandwidth is required.
•     Wireless communication with PC input and output devices, the most common being the mouse, keyboard and printer.
•     Transfer of files, contact details, calendar appointments, and reminders between devices with OBEX.
•     Replacement of previous wired RS-232 serial communications in test equipment, GPS receivers, medical equipment, bar code scanners, and traffic control devices.
•     For controls where infrared was often used.
•     For low bandwidth applications where higher USB bandwidth is not required and cable-free connection desired.
•     Sending small advertisements from Bluetooth-enabled advertising hoardings to other, discoverable, Bluetooth devices.
•     Wireless bridge between two Industrial Ethernet (e.g., PROFINET) networks.
•     Seventh and eighth generation game consoles such as Nintendo's Wii, and Sony's PlayStation 3 use Bluetooth for their respective wireless controllers.
•     Dial-up internet access on personal computers or PDAs using a data-capable mobile phone as a wireless modem.
•     Short range transmission of health sensor data from medical devices to mobile phone, set-top box or dedicated telehealth devices.
•     Allowing a DECT phone to ring and answer calls on behalf of a nearby mobile phone.
•     Real-time location systems (RTLS), are used to track and identify the location of objects in real-time using "Nodes" or "tags" attached to, or embedded in the objects tracked, and "Readers" that receive and process the wireless signals from these tags to determine their locations.
•     Personal security application on mobile phones for prevention of theft or loss of items. The protected item has a Bluetooth marker (e.g., a tag) that is in constant communication with the phone. If the connection is broken (the marker is out of range of the phone) then an alarm is raised. This can also be used as a man overboard alarm. A product using this technology has been available since 2009.
•     Calgary, Alberta, Canada's Roads Traffic division uses data collected from travelers' Bluetooth devices to predict travel times and road congestion for motorists.
•     Wireless transmission of audio (a more reliable alternative to FM transmitters)