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The OPN Sound Osso is an open-ear bone-conduction headphone that sends sound through the cheekbones so your ears stay open to traffic and conversation. It pairs over Bluetooth 5.2, has a built-in microphone, and is rated IPX5 for sweat and rain. Battery life is 9 hours with a 1.5-hour recharge and 288 hours standby. At $32.34 at Office Depot as of November 8, 2026, it sits at the low end of its recent range and is one of the cheapest bone-conduction options sold by 9 stores.
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Lowest price we've seen: $32.34 on Nov 8 at Office Depot. Tracked across 14 stores since Nov 8.
Owner feedback is mixed at 3.3 out of 5 from 37 ratings. Buyers like the open-ear awareness and the price, but several complain about sound quality and volume in noisy places.
