Open earbuds
Sony's open earbuds: a ring-shaped driver with an open centre lets outside sound in naturally, for listeners who want to stay aware of their surroundings rather than block noise.
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Ring-shaped driver
The driver surrounds an opening, so surrounding sound reaches the ear directly rather than through microphones. There is no noise cancelling.
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Strong bass for an open design
Reviewers found the bass strong for an open design, though sealed earbuds still sound fuller. They found the EQ useful for balancing the tuning.
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Wide Area Tap
Taps on the cheek in front of the ear control playback, so the earbuds themselves need not be touched. Reviewers found it reliable.