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Wireless headphones have been around since the 1960s. However, in 2004, Bluetooth wireless headphones came onto the market and revolutionized personal audio listening, gaining great popularity among audio consumers and professionals alike.

The Watch 5 Pro comes with Google's Wear OS powered by Samsung, so that means you get Google Maps, Google Assistant, Google Pay, Messages, Keep Notes, and more. In addition, Samsung Pay, Samsung Messages, Samsung Health, Bixby, and other Samsung apps are provided.

With a wireless security camera, the video signal—and, with some, the audio signal as well—transmits over the internet or other wireless network to a receiver that connects to your viewing and recording device.

Jack or analogue cinch cables already provide the amplified sound signal. Via USB, so-called frames or data packets are transferred from the hard disk to the USB sound card and then converted and amplified in the speaker.