How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to add Bluetooth audio to a console or PC you already own, choose Ugreen 5.3; if you need a pair of open-ear earbuds built for running and long wear, choose BUABMEQ Comfort Clip. These two products share almost nothing except the word "Bluetooth" — one is a tiny transmitter that gives a wired-only device wireless audio, and the other is a complete set of sport earbuds with their own battery and charging case. Reading the spec sheets side by side, the real question isn't which is "better." It's which problem you're actually trying to solve.
• Ugreen 5.3's biggest strength: it turns a PS5, PS4, Switch, desktop or Mac into a Bluetooth audio source, with aptX AD latency rated under 60ms and a 33 ft range.
• Ugreen 5.3's biggest trade-off: it's audio-only. It transmits sound to headphones or speakers and explicitly does not move files, pictures or data — and it does nothing on its own until you pair something to it.
• BUABMEQ Comfort Clip's biggest strength: an all-in-one open-ear earbud package with an 80-hour battery figure, a digital display charging case, IPX7 waterproofing and Bluetooth 6.1.
• BUABMEQ Comfort Clip's biggest trade-off: it only works with Bluetooth-enabled hosts like phones, tablets and laptops, so it can't rescue a console that has no Bluetooth audio output.
• Pick Ugreen 5.3 if your headphones are great but your console or computer won't talk to them.
• Pick BUABMEQ Comfort Clip if you want earbuds that stay put during a run and don't stuff your ear canals all day.
The Ugreen CM668 is a USB audio transmitter, and it's worth being precise about that word "audio," because it defines both what this thing does well and what it refuses to do. Plug it into the USB port of a PS5, PS4, Switch, desktop or iMac, put your Bluetooth headphones or speaker into pairing mode, and it connects automatically — no driver, no software, no setup ritual. The spec sheet calls it plug and play, and the design backs that up: a 10-gram ABS body measuring roughly 0.59 x 0.3 x 1.14 inches, a single USB connector, and no separate power plug to worry about.
What it does best is solve a specific, annoying problem. Consoles are famously stingy about Bluetooth audio, and this adapter routes game audio out to whatever Bluetooth headphones you already own. The latency claim here is the headline: aptX AD support is rated to cut audio lag to under 60ms, which the sheet describes as roughly four times shorter than standard Bluetooth's 220ms figure. For late-night gaming, that gap is the difference between gunfire matching the on-screen muzzle flash and not. Codec support covers aptX HD, aptX AD, aptX and SBC, and range is rated up to 33 ft, so stepping away from the screen mid-match doesn't necessarily cut the sound.
Buy it if you already own good Bluetooth headphones and want them to work with a console or a work-from-home PC. The sheet notes it handles Skype, Zoom, Teams and Meet, auto-switching between music and talk modes on Windows. Voice chat is handled two ways: the included 3.5mm microphone plugs into a controller, Switch dock or PC jack, or you can use your headset's own mic via the multi-function button — but only one mic at a time. Skip it if you were hoping for a general-purpose dongle. It is not one. No file transfer, no data, and no use at all without a paired audio device.
The BUABMEQ Comfort Clip (model YYK-Q71) is a completely different animal: a pair of open-ear earbuds in a white-and-blue finish with a clip-on hook shape that rests on your ears instead of sealing your ear canals. The pitch is comfort and stability. The ergonomic clip-on structure is described as ultra-light and secure enough to stay put through head shaking, running and jumping — which is exactly the failure point that makes most earbuds useless for exercise.
Battery is the other big story. The charging case has a digital display that shows remaining power for both the case and the buds, and the sheet rates total playback and call time at up to 80 hours with the case recharging the earbuds multiple times. That's a commuter-and-weekend-athlete kind of number, not a "charge it every night" number. Around that, you get Bluetooth 6.1 for fast pairing and a rated 10-meter connection distance, IPX7 waterproofing for sweat, rain splash and moisture, and a built-in noise-reduction microphone for calls, meetings and voice chat. Controls are physical push buttons rather than touch, which matters if you've ever accidentally hung up on someone with a brush of your ear.
Buy it if your priority is all-day comfort without the pressure and stuffiness of in-ear tips, and you want one pair that handles running, gym sessions, cycling and phone calls. The open-ear design also means you stay aware of traffic and surroundings, which is a real argument for outdoor runners. Skip it if your source device is a PS5 or Switch — the compatibility list is phones, tablets and laptops, and there's no USB transmitter in the box. It also can't help you if you specifically want the isolation of sealed in-ears; open-ear is the opposite of that by design.
• Best for console gaming audio → Ugreen 5.3. It exists to put Bluetooth audio into a PS5, PS4 or Switch, which the BUABMEQ buds simply cannot do.
• Best for lowest latency in games → Ugreen 5.3. aptX AD is rated under 60ms versus standard Bluetooth's 220ms figure. That's the whole point of the adapter.
• Best for running, gym and cycling → BUABMEQ Comfort Clip. IPX7 waterproofing plus a clip-on hook that's built not to fall off during movement.
• Best for all-day wear comfort → BUABMEQ Comfort Clip. Open-ear, no ear-canal plugging, and the sheet's explicit claim of no soreness or pressure over long sessions.
• Best for battery life → BUABMEQ Comfort Clip. Up to 80 hours with the digital-display charging case; Ugreen has no battery at all and draws from the host device's USB port.
• Best for work calls on a PC → Ugreen 5.3. Auto music/talk mode switching on Windows plus the included 3.5mm mic covers Zoom, Teams and Meet.
• Best for phone and tablet listening → BUABMEQ Comfort Clip. Bluetooth 6.1, automatic reconnection and iOS/Android compatibility out of the box.
• Best for a single self-contained purchase → BUABMEQ Comfort Clip. It's buds, case, cable and manual in one box; Ugreen is an accessory that assumes you already own the headphones.
If I had to pick one, I'd pick based on the job, not the spec sheet. For a PS5, PS4 or Switch owner with a good pair of Bluetooth headphones gathering dust, I'd buy the Ugreen 5.3 — it's the only one of the two that solves that problem, and the sub-60ms latency figure is the spec that makes it worth owning. But if you're a runner or gym-goer who wants one pair of earbuds for workouts, commutes and calls, I'd buy the BUABMEQ Comfort Clip instead. In my opinion it's the more complete product for everyday life: open-ear comfort, IPX7 protection and a charging case that measures its life in weeks, not hours. Buy the Ugreen to fix a device. Buy the BUABMEQ to replace your earbuds.
The Ugreen 5.3, without question. It's a USB transmitter designed to send PS5 and PS4 audio to Bluetooth headphones. The BUABMEQ Comfort Clip relies on Bluetooth from phones, tablets and laptops, so it can't add audio output to a console that doesn't offer it.
No. It's an audio transmitter only — it has no speakers and no battery, and it needs a paired Bluetooth headphone or speaker to do anything. The BUABMEQ Comfort Clip is the actual listening device here.
The Ugreen 5.3 has no battery and draws power from the USB port it's plugged into. The BUABMEQ Comfort Clip runs on its own battery with a digital-display charging case rated for up to 80 hours of combined playback and call time, and it recharges the earbuds multiple times.
That depends on what you already own. If you have Bluetooth headphones and a console, the Ugreen 5.3 is the cheaper way to unlock wireless audio — check the current price on Amazon. If you need earbuds, the BUABMEQ Comfort Clip is the more complete buy since it includes the buds, case and cable. Compare the live prices on both before deciding.
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