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2. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   Bluetooth HID is a lightweight wrapper of the human interface device protocol defined for USB. The use of the HID protocol simplifies host implementation (when supported by host operating systems) by re-use of some of the existing support for USB HID in order to support also Bluetooth HID. Keyboard and keypads must be secure.

3. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   Many wireless mobile headsets use Bluetooth technology, supported by many phones and computers, sometimes by connecting a Bluetooth adapter to a USB port. Since version 1.1 Bluetooth devices can transmit voice calls and play several music and video formats, but audio will not be played in stereo unless the cell phone or media device, and the ...

4. Bluetooth - Wikipedia

   en.wikipedia.org/wiki/Bluetooth

   Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft).

5. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   In the context of telecommunication, a headset is a combination of a headphone and microphone. Headphones connect to a signal source such as an audio amplifier, radio, CD player, portable media player, mobile phone, video game console, or electronic musical instrument, either directly using a cord, or using wireless technology such as Bluetooth ...

6. Personal area network - Wikipedia

   en.wikipedia.org/wiki/Personal_area_network

   A wireless personal area network (WPAN) is a PAN carried over a low-powered, short-distance wireless network technology such as IrDA, Wireless USB, Bluetooth, NearLink or Zigbee. The reach of a WPAN varies from a few centimeters to a few meters. WPANs specifically tailored for low-power operation of the sensors are sometimes also called low ...

7. Wireless microphone - Wikipedia

   en.wikipedia.org/wiki/Wireless_microphone

   Singer Cody Simpson using a wireless microphone headset in a 2013 concert in Montreal. A wireless microphone, or cordless microphone, is a microphone without a physical cable connecting it directly to the sound recording or amplifying equipment with which it is associated. Also known as a radio microphone, it has a small, battery-powered radio ...