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Bluetooth headsets use state-of-the-art Bluetooth 5.0 technology to provide more stable connections (up to 15 meters) , faster pairing and universal compatibility.
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It's not just a wireless headset, it's an MP3 player. You don't need to carry a cell phone to enjoy your music list. Expandable TF card up to 32 GB (packaging does not contain TF card)
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With just a 2-hour charge, you can have up to 10 hours of talk/audio playback time, and this normal headset is enough to provide a week's worth of music support for your workout.