True wireless earbuds haven’t been around for that long (relatively speaking, anyway), but they quickly evolved into two main form factors: stem earbuds like the Apple AirPods, and rounded stemless designs that fit snugly into your ear.  You might think that’s about as much variety as we need when it comes to earbud design, but Sony has just shaken things up with the launch of its latest wireless earbuds. The Sony LinkBuds are the world’s first open-ring in-ear headphones, a design that leaves your ear canal totally free to hear your environment while you enjoy your music.
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