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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want one set of open-ear headphones that survives full submersion and carries its own music library, choose HIFI WALKER Bone Conduction Headphones; if you need a lighter, cheaper-feeling daily pair for road rides where your phone stays in your jersey pocket, choose POLVCDG Bone Conduction Headphones.
• HIFI WALKER's biggest strength: IPX8 waterproofing rated for continuous immersion up to 2 meters, plus a built-in 32GB MP3 player that holds roughly 8,000 songs — so you can swim, surf or ride without a phone at all.
• HIFI WALKER's biggest trade-off: It's a heavier, more complex headset (0.18 kg) with only 8 hours of playback and touch controls that can misread sweaty taps — though a dedicated swimming mode lock helps.
• POLVCDG's biggest strength: A 29-gram titanium-frame build with 10 hours of battery, ENC call noise reduction and a 16mm bone conduction driver — light enough to forget you're wearing it.
• POLVCDG's biggest trade-off: IPX6 only protects against sweat and rain, and the listing explicitly says it is not a swimming headphone. Bluetooth 4 is also dated next to HIFI WALKER's 5.3.
• Pick HIFI WALKER if your rides end at a pool, or if you want music with zero phone dependency.
• Pick POLVCDG if your cycling is dry-weather, phone-in-pocket commuting and you value low weight and long battery over water sealing.
The T10 Air is the more specialized tool of the two. Its headline feature is the IPX8 rating — verified for continuous immersion up to 2 meters — which is a different class of protection from splash resistance. That matters for triathletes, lap swimmers and anyone whose cycling loop finishes at an open-water swim. The open-ear design routes audio through your cheekbones and keeps your ear canals clear, so you still hear traffic, a ride leader's shout or a lifeguard's whistle.
The second differentiator is the built-in 32GB of flash memory. That's an independent MP3 player mode holding over 8,000 songs, and it solves a real physics problem: Bluetooth signals don't travel through water, so wireless audio simply stops working the moment you submerge. Switching to MP3 mode keeps the music continuous mid-stroke. On the bike, Bluetooth 5.3 handles the wireless side for gym sessions, commuting and cycling, and you can flip between modes with tactile buttons rather than guesswork.
Buy it if you swim or ride near water, want phone-free music, or need the security of an adjustable tension band that stays put through bouncy efforts. Skip it if your riding is strictly dry-weather road work and you'd rather have maximum battery life and minimum weight.
POLVCDG Bone Conduction Headphones: Who It's For
POLVCDG goes the other direction: lighter, longer-running and built around everyday wear. At 29 grams on a flexible titanium frame with a skin-friendly coating, the emphasis is on a fit that adapts to any head shape without pressure points — the kind of thing you notice on hour three of a ride, not minute three. The open-ear geometry gives you 360° environmental awareness, which is the reason many cyclists choose bone conduction in the first place.
The spec sheet reads like a commuter's checklist. IPX6 keeps sweat and rain out (cycling, gym, skiing, running are the listed uses), and the listing is explicit that this is not a swimming headphone and shouldn't be used underwater. Battery life is 10 hours with Type-C quick charging — two hours more than the HIFI WALKER, and a charging standard you almost certainly already have cables for. ENC call noise reduction plus a built-in mic means taking a call mid-ride or mid-hike is genuinely practical, and the 16mm drivers are pitched at rich, high-fidelity sound for music and voice alike.
The trade-offs are real, though. IPX6 is sweat-and-rain protection, not immersion protection, so a downpour is fine but a puddle crossing at speed is a risk. The listed Bluetooth version is 4, which is several generations behind HIFI WALKER's 5.3 and can mean a less robust connection in crowded signal environments. There's no built-in storage, so you're always tethered to a phone or watch. And while noise control lists Active Noise Cancellation, open-ear designs don't seal your canals — treat that as a spec-sheet label rather than true isolation.
Buy it if you ride in dry or drizzly conditions, take calls on the move, and want the lightest possible thing on your head. Skip it if water is part of your routine.
Side-by-Side: Which Should You Choose?
• Best for swimming or triathlon training → HIFI WALKER. IPX8 immersion up to 2 meters and an MP3 mode that works where Bluetooth physically cannot.
• Best for phone-free music → HIFI WALKER. 32GB of onboard storage, roughly 8,000 songs, no device required.
• Best for light weight and comfort → POLVCDG. 29 grams on a flexible titanium frame versus 0.18 kg.
• Best for call quality on the bike → POLVCDG. ENC noise reduction and a built-in mic are listed; HIFI WALKER's sheet doesn't claim call processing.
• Best for wet-weather cycling → HIFI WALKER. IPX8 beats IPX6 on paper for anything beyond sweat and rain.
• Best for connection stability → HIFI WALKER. Bluetooth 5.3 is a meaningful generation ahead of Bluetooth 4.
• Best for a gift or a first bone-conduction pair → POLVCDG. Simple, light, with an adjustable elastic band and cable in the box.
In my opinion, HIFI WALKER is the stronger pick for cycling earbuds specifically — not because it sounds better on paper, but because it removes two failure points that ruin rides: water damage and phone dependency. If your cycling overlaps with swimming, or you simply don't want your phone on you, that combination of IPX8 and 32GB of onboard music is hard to argue with.
I'd steer you to POLVCDG if your riding is dry, your phone is always with you, and battery life plus a featherweight fit matter more than sealing. That's a legitimate set of priorities — just not mine for this use case.
For wet or swim-adjacent cycling, yes — IPX8 allows continuous immersion up to 2 meters, while POLVCDG is IPX6 and explicitly not for underwater use. For dry road riding, POLVCDG's 29-gram weight and 10-hour battery are genuinely competitive.
No. The product information states it is not a swimming headphone and isn't suitable for use underwater. IPX6 covers sweat and rain only. HIFI WALKER is the one rated for immersion.
POLVCDG lists 10 hours of playback with Type-C fast charging; HIFI WALKER lists 8 hours with a 2-hour charge time. If long sessions between charges matter most, POLVCDG wins on that single metric.
With POLVCDG, yes — there's no onboard storage, so it's Bluetooth-only. HIFI WALKER includes 32GB of built-in memory and an independent MP3 mode, so it can play music with no phone at all, which is also the only way to get audio while swimming.
Both are budget-friendly bone conduction options, and pricing shifts often, so check the current price on Amazon before deciding. Weigh it against what you actually need: water sealing and onboard storage on one side, lighter weight and longer battery on the other.
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See also: bone conduction headphones with mic, bone conduction headphones for swimming, SONR Bone Conduction Waterproof vs KLKE Bone Conduction Headphones