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2. 2.4 GHz radio use - Wikipedia

   en.wikipedia.org/wiki/2.4_GHz_radio_use

   Bluetooth devices intended for use in short-range personal area networks operate from 2.4 to 2.4835 GHz. To reduce interference with other protocols that use the 2.45 GHz band, the Bluetooth protocol divides the band into 80 channels (numbered from 0 to 79, each 1 MHz wide) and changes channels up to 1600 times per second.

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. Wireless device radiation and health - Wikipedia

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

   The antennas contained in mobile phones, including smartphones, emit radiofrequency (RF) radiation (non-ionizing "radio waves" such as microwaves); the parts of the head or body nearest to the antenna can absorb this energy and convert it to heat or to synchronised molecular vibrations (the term 'heat', properly applies only to disordered molecular motion).

5. Apple's 2025 Chip Transition Targets New Wireless Edge ... - AOL

   www.aol.com/apples-2025-chip-transition-targets...

   The Wi-Fi and Bluetooth chips will enable Apple devices to go online via wireless networks, pair with headphones, and more. ... Broadcom will still provide the radio frequency filter for modems.

6. List of wireless network protocols - Wikipedia

   en.wikipedia.org/wiki/List_of_wireless_network...

   Some of these technologies include standards such as ANT UWB, Bluetooth, Zigbee, and Wireless USB. Wireless Sensor Networks (WSN / WSAN) are, generically, networks of low-power, low-cost devices that interconnect wirelessly to collect, exchange, and sometimes act-on data collected from their physical environments - "sensor networks". Nodes ...

7. Audio headset - Wikipedia

   en.wikipedia.org/wiki/Audio_headset

   The wireless headset communicates with the base-station via 2.4 GHz RF, and the voice signals are sent or received via the base unit to the telephone unit. Some products will also offer an automatic handset lifter, so the user can wirelessly lift the handset off the telephone by pressing the button on the wireless headset.