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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to add low-latency Bluetooth audio to a console, Mac, Switch or PC that has no Bluetooth of its own, choose Smof Audio Adapter; if you need an all-in-one open-ear sport headphone for running, cycling and gaming on a phone you already own, choose Generic Bone Conduction Ear.
• Smof Audio Adapter — biggest strength: aptX Low Latency certified transmission with lag reduced to under 40ms, which the data sheet describes as roughly 5x shorter than standard Bluetooth.
• Smof Audio Adapter — biggest trade-off: it is audio-only, needs a source device and headset that both support the same codecs, and is explicitly not recommended for Sony headphones because it lacks LDAC.
• Generic Bone Conduction Ear — biggest strength: a complete Bluetooth 5.3 headphone with an open-ear bone conduction driver, IPX4 sweat resistance, ANC and a long battery claim, all in one wearable package.
• Generic Bone Conduction Ear — biggest trade-off: "ultra-low latency mode" is a headphone feature with no published millisecond figure, so it is not the same class of guarantee as the Smof's aptX LL certification.
• Who each pick is for: the Smof adapter for someone whose console, Mac or PC has no Bluetooth audio and who wants the shortest possible delay; the Generic bone conduction ear for an active user who wants one self-contained headset for sport and casual gaming.
This is a transmitter, not a headphone. It is a 3-gram black USB dongle running Bluetooth 5.2, and its entire job is to give Bluetooth audio to devices that were never built for it. Plug it into the USB port of a PS5, PS4, Mac, Switch or PC or laptop, pair it with your own Bluetooth headphones or speaker, and the adapter handles the rest. No driver installation is needed, and after the first successful pairing the connection is recognised automatically on later use. That "plug, pair, forget" loop is the whole appeal.
The headline feature is aptX Low Latency. The data sheet states lag is reduced to under 40ms, which it describes as about 5x shorter than standard Bluetooth and effectively unnoticeable. In practice that is the difference between a game's gunshot landing on the frame you pulled the trigger and landing a beat late, and between dialogue staying glued to lips in a film. The adapter supports SBC, aptX, aptX HD, aptX Low Latency and aptX Adaptive, adapting to whatever your headset can handle — but the data sheet is blunt that both your source device and your headset must support those codecs for the benefit to appear. Pair it with a plain SBC-only headset and you get standard Bluetooth behaviour.
Bluetooth 5.2 is the other quiet strength. The data sheet claims it is more reliable, less prone to interference and less energy-hungry than earlier versions, while remaining backwards compatible with older Bluetooth audio devices. Two years of warranty coverage is listed.
Generic Bone Conduction Ear: Who It's For
This is the opposite kind of product: a finished, wearable headset. The X22 uses bone conduction drivers with an open-ear earclip design, so the ear canal stays open and you keep hearing traffic, footsteps and your surroundings while music plays. The clip is built to stay put during intense movement, and the lightweight build is aimed at hours of wear without ear pain. For running on a road or cycling in traffic, that open-ear structure is the entire safety argument.
The spec list is broad. Bluetooth 5.3 via a Bluetrum chip gives fast pairing, anti-interference and a stable connection up to 10 meters. An "ultra-low latency mode" is included for gaming and video, alongside stereo sound with boosted bass, active noise cancellation, and a breathing light effect that the data sheet positions as a style feature for sport and night use. IPX4 handles sweat and light splashes, which covers gym sessions, runs and outdoor rides. The long battery claim is about hours of playback and calls per charge rather than a specific number. Compatibility is wide: iOS, Android and PC, with a 3.5mm jack absent — Bluetooth only. The housing is ABS plastic, colours include black, white and skin tone, and a wireless charging case and user manual are in the box. Warranty is one year.
Two honest caveats. First, "ultra-low latency mode" has no millisecond figure attached, so there is no way to compare it numerically against the Smof's sub-40ms claim. Second, active noise cancellation on an open-ear design is a claim worth thinking about carefully — with the ear canal deliberately open, ANC here is not going to behave like a sealed over-ear. If total isolation matters to you, an open-ear headphone is the wrong category.
• Best for gaming lag on a console or PC → Smof Audio Adapter. aptX Low Latency with a stated sub-40ms figure is a hard, specific number; the Generic's latency mode is not quantified.
• Best for a device with no Bluetooth at all → Smof Audio Adapter. PS5, PS4, Switch, Mac, PC and laptops gain Bluetooth audio they otherwise lack.
• Best for running, cycling and gym → Generic Bone Conduction Ear. Open-ear safety, IPX4 sweat resistance and a secure earclip are built for movement; the Smof adapter is not a wearable.
• Best for hearing your surroundings → Generic Bone Conduction Ear. Open-ear by design. The Smof adapter's outcome depends entirely on which headphone you pair with it.
• Best for travel and everyday calls → Generic Bone Conduction Ear. One self-contained headset, a charging case, and compatibility with iOS, Android and PC.
• Best for using your existing premium headphones → Smof Audio Adapter. It turns headphones you already own into wireless ones for a non-Bluetooth source, provided they support the matching codecs.
• Best for noise control → Generic Bone Conduction Ear. ANC is listed on the spec sheet; the Smof adapter has no noise control of any kind.
• Best for long-term peace of mind → Smof Audio Adapter on paper. Two years of warranty versus one year on the Generic.
In my opinion, these two barely compete — they solve different problems, and the right answer depends on what you already own. If your problem is "my PS5, Switch or Mac has no Bluetooth audio and my games sound out of sync," I would buy the Smof Audio Adapter. It is the only one of the two that attacks latency with a certified codec and a published sub-40ms figure, and it costs you nothing in the headphone department if you already like your cans.
If your problem is "I need one headset for running, the gym and casual gaming on my phone," I would buy the Generic Bone Conduction Ear. It is the complete product: open-ear safety, IPX4, ANC, a charging case and Bluetooth 5.3.
how to make bluetooth headphones low latency
You need both ends to speak the same low-latency codec. The Smof Audio Adapter supports SBC, aptX, aptX HD, aptX Low Latency and aptX Adaptive, and adapts to your headset's configuration — but the data sheet notes your source device and headset must support those codecs for it to work properly. Pairing an aptX LL transmitter with an SBC-only headset gets you standard Bluetooth timing.
how to get low latency on bluetooth headphones windows 11
On Windows 11 you are limited by the Bluetooth hardware already inside the PC and by your headset's codec support. The Smof adapter takes a different route: it plugs into a USB port and provides Bluetooth 5.2 audio with aptX Low Latency, no driver installation required, and reconnects automatically after the first pairing. Check that your headset supports the same aptX variant before expecting the sub-40ms figure.
how to get low latency on bluetooth headphones
Start with a transmitter that actually supports a low-latency codec. The Smof adapter is aptX Low Latency certified and states lag under 40ms, roughly 5x shorter than standard Bluetooth. The Generic Bone Conduction Ear instead includes an "ultra-low latency mode" for gaming and video, but its data sheet does not publish a millisecond figure, so treat it as a mode rather than a measured guarantee.
do bluetooth headphones have latency
Standard Bluetooth audio does introduce delay, which is why the Smof adapter's data sheet frames its sub-40ms result as roughly 5x shorter than standard Bluetooth and "virtually unnoticeable." Latency is not fixed across devices — it depends on the codecs on both ends. Note also that the Smof adapter is audio-only and is not recommended for Sony headphones, since it lacks LDAC and would fall back to SBC.
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See also: PPBP Open Ear Headphones vs Hyggey Havik Bone Conduction Headphones, Dulailt Open-Ear Bone Conduction vs PDSKEPZ Open Ear Earbuds, MOSSANTFUL Bone Conduction Headphones vs TRAUSI IPX7