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2. Freepulse wireless headphones - Wikipedia

   en.wikipedia.org/wiki/Freepulse_wireless_headphones

   The Logitech FreePulse Wireless Headphones are headphones that use Bluetooth to transmit audio from the receiver to the headphones. The receiver can use a 3.5 mm headphone jack to plug into most audio outputs. The headphones emit sound from up to 10 metres (33 ft) away from the receiver using Bluetooth 2.0 with Enhanced Data Rate (EDR) wireless ...

3. 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.

4. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones that use cables typically have either a 1 ⁄ 4 inch (6.4 mm) or 1 ⁄ 8 inch (3.2 mm) phone jack for plugging the headphones into the audio source. Some headphones are wireless, using Bluetooth connectivity to receive the audio signal by radio waves from source devices like cellphones and digital players. [5]

5. IEC 61000-4-5 - Wikipedia

   en.wikipedia.org/wiki/IEC_61000-4-5

   IEC 61000-4-5 defines test set-up, procedures, and classification levels. In particular, it standardizes the required surge voltage and current waveforms for laboratory testing, with the "1.2/50-8/20 μs" impulse being the most frequently used surge waveform. Although this standard is designed for testing equipment as a whole at system level ...

6. List of Fitbit products - Wikipedia

   en.wikipedia.org/wiki/List_of_Fitbit_products

   Fitbit Ace range. Launched in March 2018, the Fitbit Ace is essentially a version of the Alta for children aged 8 and above. In March 2019, the Fitbit Ace 2 for kids aged 6 to 12 was announced. In March 2021, the Fitbit Ace 3 was released, adding a curvier appearance, also for ages 6–12. [2] [3] In July 2024, Fitbit has announced the new ...

7. Bluetooth - Wikipedia

   en.wikipedia.org/wiki/Bluetooth

   Bluetooth is commonly used to transfer sound data with telephones (i.e., with a Bluetooth headset) or byte data with hand-held computers (transferring files). Bluetooth protocols simplify the discovery and setup of services between devices. [55] Bluetooth devices can advertise all of the services they provide. [56]

8. Six degrees of freedom - Wikipedia

   en.wikipedia.org/wiki/Six_degrees_of_freedom

   The six degrees of freedom: forward/back, up/down, left/right, yaw, pitch, roll. Six degrees of freedom ( 6DOF ), or sometimes six degrees of movement, refers to the six mechanical degrees of freedom of movement of a rigid body in three-dimensional space. Specifically, the body is free to change position as forward/backward (surge), up/down ...

9. 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.