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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a plug-and-play wired connection that works with almost any 3.5mm device you already own, choose AIAUXAI Earbuds 3.5mm; if you need open-ear awareness and a wireless fit for cycling, choose POLVCDG Bone Conduction Headphones.
• AIAUXAI Earbuds 3.5mm — biggest strength: A wired 3.5mm jack with a built-in DAC chip, 14.2mm dynamic drivers and in-ear silicone tips that isolate outside noise. No battery, no pairing, no charging.
• AIAUXAI Earbuds 3.5mm — biggest trade-off: It's corded and in-ear, so it blocks the ambient sound you'd want to hear on a busy road, and it only works with devices that still have a 3.5mm port.
• POLVCDG Bone Conduction Headphones — biggest strength: An open-ear, 29-gram titanium-frame design that leaves your ear canals unobstructed, with IPX6 water resistance and up to 10 hours of battery per charge.
• POLVCDG Bone Conduction Headphones — biggest trade-off: It's wireless only (no jack), relies on Bluetooth, and open-ear audio by design doesn't seal out the world the way in-ear tips do.
• For whom: Choose AIAUXAI for school, iPad, Switch, Chromebook or any wired-listening setup where you want isolation and zero charging. Choose POLVCDG for cycling, running and workouts where hearing traffic matters more than bass depth.
The AIAUXAI Earbuds 3.5mm is a straightforward wired in-ear headphone built around one idea: plug it in and it works. There's a 3.5mm jack, a built-in microphone, and push-button volume control on the cable. No adapters, no software, no pairing dance. The spec sheet lists a 14.2mm dynamic driver, 32-ohm impedance, a 20Hz–20,000Hz frequency range and 105dB sensitivity — a combination that's easy to drive from a phone, tablet or laptop headphone port without any external amp.
Where it earns its place is isolation. The in-ear silicone tips (rounded shape, silicone and TPE materials) physically block surrounding noise, and the company describes the sound as deep bass with crisp trebles via high-fidelity stereo drivers and a DAC chip. In practice, that's the profile that suits commuting on public transport, focused study, gaming sessions and calls where you want the outside world turned down. The box also includes a carrying case and two pairs of eartips, which is a nice touch for a wired set you'll toss in a bag.
Who should buy it? Anyone whose device still has a 3.5mm port and who wants a no-fuss, no-charging option: kids over seven using a school Chromebook or iPad, Switch players, people with older iPhones (SE, 6s, 6 Plus, 5s-era) or Android phones with a headphone jack, and anyone who's tired of Bluetooth dropouts. The compatibility list is unusually broad — Samsung Galaxy A-series and S-series, OnePlus Nord models, Google Pixel and Chromebook, iPad, iPod touch, MP3/MP4 players and more.
Who should skip it? Cyclists, first and foremost. In-ear tips that isolate noise are exactly the wrong choice if you need to hear cars, bells and other riders. Skip it too if your phone has no headphone jack and you don't want to carry a dongle, or if you want the freedom of a wireless fit during sweaty workouts.
The POLVCDG Bone Conduction Headphones take the opposite approach. Instead of sealing your ear canal, they sit on the bone in front of your ear and transmit sound through it, leaving your ear canals completely open. The company calls this "360° environmental awareness," and for cycling that's the whole point: you hear your music or podcast and you still hear the traffic behind you. The frame is titanium, coated in a skin-friendly material, and flexes to fit different head shapes. At 29 grams, it's light enough that the company positions it as fatigue-free for long activities.
It's built for movement. The IPX6 rating means it shrugs off sweat and rain — cycling, gym work, skiing, running — though the documentation is explicit that it is not a swimming headphone and shouldn't be used underwater. Audio comes from 16mm bone conduction drivers covering 20Hz–20,000Hz, and there's ENC call noise reduction plus a microphone, so phone calls in windy or noisy conditions are part of the pitch. Controls are touch-based for volume, and the spec sheet lists active noise cancellation as a control feature — worth understanding that with open-ear design, "noise cancellation" here is about call clarity, not sealing out the world.
Battery is the other headline: up to 10 hours of music, calls and podcasts per charge, with Type-C fast charging when you do need to top up. You get the headset, a charging cable, an adjustable elastic band and a manual in the box. Connectivity is Bluetooth (version 4 per the spec sheet) with no 3.5mm jack at all.
Who should buy it? Cyclists, runners, hikers and gym-goers who prioritize safety and situational awareness, anyone who finds in-ear tips uncomfortable or prone to falling out, and people whose phones no longer have a headphone jack. Who should skip it? Anyone who wants deep isolation for noisy commutes or flights, anyone who prefers wired reliability with zero charging, and swimmers, since IPX6 doesn't cover submersion.
• Best for cycling safety → POLVCDG Bone Conduction Headphones. Open-ear design keeps traffic audible; that's the single biggest reason to pick it.
• Best for noise isolation → AIAUXAI Earbuds 3.5mm. The in-ear silicone tips physically block surrounding sound, which open-ear designs deliberately don't.
• Best for battery life → POLVCDG Bone Conduction Headphones. Up to 10 hours per charge versus a wired set that never needs charging at all — pick based on whether you'd rather charge or stay tethered.
• Best for zero-hassle wired use → AIAUXAI Earbuds 3.5mm. Plug into any 3.5mm jack and go; no pairing, no Bluetooth version to worry about.
• Best for sweaty, rainy workouts → POLVCDG Bone Conduction Headphones. IPX6 water resistance is designed for sweat and rain; a wired in-ear set has no such rating listed.
• Best for kids, school and older devices → AIAUXAI Earbuds 3.5mm. The compatibility list covers iPad, Chromebook, Switch, iPod and a long run of Samsung and OnePlus phones with a headphone jack.
• Best for calls in noisy places → POLVCDG Bone Conduction Headphones. ENC call noise reduction and a dedicated mic are built in; the AIAUXAI has a mic too, but isolation does the heavy lifting there.
• Best for all-day comfort on the move → POLVCDG Bone Conduction Headphones. 29 grams on a flexible titanium frame versus in-ear tips that some riders find fatigue over long sessions.
In my opinion, if cycling is your main use, the POLVCDG Bone Conduction Headphones are the clear pick. Hearing traffic while you ride isn't a nice-to-have — it's the reason open-ear exists, and the IPX6 rating, 29-gram frame and 10-hour battery all line up with that job. I'd choose the AIAUXAI Earbuds 3.5mm only if isolation and a wired, never-charge connection matter more to you than road awareness — school, gaming, commuting on transit, older devices. For a cyclist, I recommend the POLVCDG.
FAQ
For cycling, POLVCDG. Its open-ear design leaves your ear canals unobstructed so you can hear traffic, and the IPX6 rating handles sweat and rain. In-ear AIAUXAI tips isolate sound, which works against you on a bike.
No. The spec sheet lists no headphone jack — it's wireless via Bluetooth only. If you need a wired 3.5mm connection, the AIAUXAI Earbuds 3.5mm is the one with the jack.
POLVCDG is rated for up to 10 hours of music, calls and podcasts per charge with Type-C fast charging. The AIAUXAI is wired, so it draws power from your device and never needs its own charge.
Prices change, so I can't quote them here — check the current price on Amazon using the button on this page. On specs alone, AIAUXAI is better value for wired, isolated listening, and POLVCDG for open-ear sports use.
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See also: Vikye Bone Conduction Earbuds vs Voerou Sleep Headphones, HIFI WALKER Bone Conduction Headphones vs Opinta Swimming Headphones, Phiaton BT 390 vs Nanajorwa Bone Conduction Headphones