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2. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   Audio headset. A typical call center/office headset. A headset is a combination of headphone and microphone. Headsets connect over a telephone or to a computer, allowing the user to speak and listen while keeping both hands free.

3. Cordless telephone - Wikipedia

   en.wikipedia.org/wiki/Cordless_telephone

   A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station. A cordless telephone differs functionally from a mobile telephone in ...

4. The best mobile microphones for 2024 - Engadget

   www.engadget.com/best-mobile-microphones-for...

   Here’s a list of the best mobile microphones you can buy, plus how to pick the best one for your needs.

5. Mobile phone - Wikipedia

   en.wikipedia.org/wiki/Mobile_phone

   A mobile phone or cell phone [a] is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone ( landline phone ). The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which ...

6. Telephone - Wikipedia

   en.wikipedia.org/wiki/Telephone

   A cordless telephone or portable telephone consists of a base station unit and one or more portable cordless handsets. The base station connects to a telephone line, or provides service by voice over IP (VOIP).

7. Martin Cooper (inventor) - Wikipedia

   en.wikipedia.org/wiki/Martin_Cooper_(inventor)

   On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from a Manhattan sidewalk to his counterpart at competitor Bell Labs. [4] [5] Cooper reprised the first handheld cellular mobile phone (distinct from the car phone) in 1973 and led the team that re-developed it and brought it to market in 1983. [6] [7] He is considered the "father ...