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  2. List of Bluetooth profiles - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_profiles

    Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.

  3. Bluetooth - Wikipedia

    en.wikipedia.org/wiki/Bluetooth

    A Bluetooth earbud, an earphone and microphone that communicates with a cellphone using the Bluetooth protocol. 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).

  4. List of Bluetooth protocols - Wikipedia

    en.wikipedia.org/wiki/List_of_Bluetooth_protocols

    The host stack is generally implemented as part of an operating system, or as an installable package on top of an operating system. For integrated devices such as Bluetooth headsets, the host stack and controller stack can be run on the same microprocessor to reduce mass production costs; this is known as a hostless system.

  5. Audio headset - Wikipedia

    en.wikipedia.org/wiki/Audio_headset

    A very common application is a hands-free Bluetooth earpiece for a phone which may be in a user's pocket. There are two types of Bluetooth headsets. Headsets using Bluetooth v1.0 or v1.1 generally consist of a single monaural earpiece, which can only access Bluetooth's headset/handsfree profile.

  6. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    A typical example of a headset used for voice chats. A headset is a headphone combined with a microphone. Headsets provide the equivalent functionality of a telephone handset with hands-free operation. Among applications for headsets, besides telephone use, are aviation, theatre or television studio intercom systems, and console or PC gaming.

  7. List of Logitech products - Wikipedia

    en.wikipedia.org/wiki/List_of_Logitech_products

    Free Spinning (toggled by software - various methods available) Darkfield Laser: 200-4000: Unifying / Bluetooth 4.0: Rechargeable Li-Po (500 mAh) battery: Full charge can last 70 days. Able to connect to three separate devices. Logitech Flow compatible [25] MX Master 3 for Mac 2020: 7: Free Spinning (toggled by software - various methods ...

  8. Apple headphones - Wikipedia

    en.wikipedia.org/wiki/Apple_headphones

    The iPhone Stereo Headset was introduced in 2007 and was bundled with the original iPhone and iPhone 3G, and featured a control capsule in-line with the left earbud's wire with a microphone and a single button, actuated by squeezing the unit, which can be programmed to control calls, presentations, music and video playback, launch Siri, or take ...

  9. Crystal radio - Wikipedia

    en.wikipedia.org/wiki/Crystal_radio

    1600 ohm magnetic headset. The early earphones used with wireless-era crystal sets had moving iron drivers that worked in a way similar to the horn loudspeakers of the period. Each earpiece contained a permanent magnet about which was a coil of wire which formed a second electromagnet. Both magnetic poles were close to a steel diaphragm of the ...