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2. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headsets are also available with 2.5 mm jack sockets for many DECT phones and other applications. Cordless bluetooth headsets are available, and often used with mobile telephones. Headsets are widely used for telephone-intensive jobs, in particular by call centre workers. They are also used by anyone wishing to hold telephone conversations with ...

3. Phone connector (audio) - Wikipedia

   en.wikipedia.org/wiki/Phone_connector_(audio)

   Invented in the late 19th century for telephoneswitchboards, the phone connector remains in use for interfacing wired audio equipment, such as headphones, speakers, microphones, mixing consoles, and electronic musical instruments(e.g. electric guitars, keyboards, and effects units). A maleconnector(a plug), is mated into a femaleconnector (a ...

4. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   Mobile phone Mobile phone or smartphone headsets may include a volume control, microphone and 3.5mm plug. Mobile (cellular) phone headsets are often referred to as handsfree. Older mobile phones used a single earphone with a microphone module connected in the cable. For music-playing mobile phones, manufacturers may bundle stereo earphones with ...

5. Apple headphones - Wikipedia

   en.wikipedia.org/wiki/Apple_headphones

   Apple Inc. has produced and sold headphones since 2001, available for standalone purchase and bundled with iPhone (until 2020) and iPod (until 2022) products. Apple's current product line consists of EarPods (wired earbuds available with a 3.5mm headphone or Lightning connector or USB-C ), AirPods and AirPods Pro (wireless Bluetooth earbuds ...

6. 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).

7. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation associated with mobile phone antennas or cell phone towers is affecting human health. [1] Mobile phone networks use various bands of RF radiation, some of which overlap with the microwave range. Other digital wireless systems, such as data communication ...