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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 pair of everyday wireless earbuds for the gym, the commute and phone calls, choose Crave Octane; if you need headphones you can actually wear in the pool and swim with, choose POLVCDG Swimming Headphones. These two look like they belong in the same category, but they solve completely different problems — one is a lifestyle earbud, the other is a waterproof, phone-free training tool. Below I break down what each one really is, based only on the specs and features each brand lists.
• Crave Octane's biggest strength: classic in-ear Bluetooth earbuds with magnetic powered ends that auto power on and off, an in-line mic, IPX4 sweat resistance and up to 8 hours of playback — a simple, familiar everyday listening setup.
• Crave Octane's biggest trade-off: IPX4 means sweat and light splashes only. It is not built for swimming, and its Bluetooth 4 connection is an older standard than what you'll find on the POLVCDG.
• POLVCDG Swimming Headphones' biggest strength: IPX8 waterproofing (submersible up to two meters for an hour), bone conduction open-ear design, 32GB of built-in storage for phone-free MP3 listening, and up to 10 hours of battery.
• POLVCDG Swimming Headphones' biggest trade-off: underwater playback only works in MP3 mode, because Bluetooth cannot transmit through water. You also give up in-ear isolation and the compact fit of a traditional earbud.
• Who Crave Octane is for: someone who wants affordable-feeling, familiar earbuds for running, cycling, calls and daily listening.
• Who POLVCDG is for: swimmers, open-water athletes and anyone who wants to train with music but leave the phone behind.
The Crave Octane is a conventional true-wireless-style earbud with a neck-cable design, and it leans hard into convenience. The headline feature is the magnetic ends: snap them together and the earbuds power off; pull them apart and they power back on. It's a small thing, but it means you're not fumbling for a button every time you take them out of your ears. Crave pairs that with an in-line microphone for taking calls on the fly, and a quoted 8 hours of playback for both music and talk.
So who should buy it? If your "active" means the treadmill, the bike path, the gym floor and walking the dog in the rain, the Octane covers all of it. It's the earbud you leave in your bag and grab without thinking. Who should skip it? Swimmers, first and foremost — IPX4 will not survive a lap session, let alone submersion. Also skip it if you want the latest Bluetooth generation or active noise cancellation, because the Octane has neither: it's Bluetooth 4 with no noise control, and the controls live on a remote rather than on the bud itself. If you want your headphones to disappear into your ears and just work with your phone, this is a reasonable, unfussy pick.
POLVCDG Swimming Headphones: Who It's For
The POLVCDG Swimming Headphones are a different animal entirely. This is a bone conduction, open-ear headset with a flexible titanium frame wrapped in a skin-friendly coating, sized at 32 grams. Because nothing goes inside your ear canal, you keep 360° awareness of traffic, trail and pool deck around you — which is exactly why open-ear designs show up in running and cycling circles. The trade-off is obvious: you don't get the sealed-in thump of an in-ear bud, and you'll hear more of the world around you at all times.
The real story here is water. POLVCDG rates these IPX8, meaning they can be submerged in up to two meters of water for an hour. That's the spec that makes them swimming headphones rather than "sweatproof" headphones. There's an important catch, and POLVCDG states it plainly: Bluetooth can't travel through water, so underwater listening has to happen in MP3 mode. That's where the 32GB of built-in memory comes in — enough for a large local library, so you can swim, run or ride with no phone at all. When you're back on land, you flip to Bluetooth 5 wireless mode for calls and streaming, and the built-in mic uses environmental noise cancellation to keep your voice clear in noisy places.
Battery life is quoted at 10 hours with fast charging, and the 16mm bone conduction drivers cover a 20 Hz–20,000 Hz range. Who should buy it? Swimmers, triathletes, open-water athletes and anyone who wants music without carrying a phone. Who should skip it? People who mainly want an everyday pair of earbuds for calls and casual listening — the open-ear fit and bone conduction sound simply aren't the same experience as a traditional in-ear bud, and the green color and headband-style frame are a very different look.
• Best for swimming → POLVCDG Swimming Headphones. IPX8 and two-meter submersion for an hour is the deciding spec; the Crave Octane's IPX4 is sweat and splash only.
• Best for phone-free listening → POLVCDG. 32GB of built-in storage and an MP3 mode mean no phone required, which the Crave Octane can't do — it's Bluetooth-only.
• Best for battery life → POLVCDG, narrowly. Up to 10 hours versus up to 8 hours on the Crave Octane.
• Best for call clarity in noisy places → POLVCDG. It lists environmental noise cancellation and active noise cancellation; the Crave Octane lists no noise control at all.
• Best for a familiar in-ear fit → Crave Octane. Three ear tip sizes and three ear hook sizes let you dial in a snug seal that open-ear designs deliberately avoid.
• Best for newer wireless tech → POLVCDG. Bluetooth 5 against Bluetooth 4 on the Crave Octane.
• Best for keeping one earbud set in your gym bag → Crave Octane. The pouch, extra tips, hooks and cable make it a grab-and-go everyday kit.
• Best for runners and cyclists who want to hear traffic → POLVCDG. The open-ear design keeps your ear canals unobstructed.
For most people reading this, the honest answer is that these aren't really competitors — they're two tools for two jobs. If you asked me to pick one, I'd pick the POLVCDG Swimming Headphones, because its IPX8 rating, 32GB of built-in storage and dual Bluetooth/MP3 modes cover far more ground: swimming, running, cycling and phone-free training all work, and 10 hours of battery beats 8. The Crave Octane only wins if you specifically want a cheap-to-replace-style everyday in-ear bud with a snug fit and a mic for calls, and you never plan to get it truly wet. In my opinion, the POLVCDG is the more capable purchase for an active person. Check the current price on Amazon before you decide.
No. Crave rates the Octane IPX4, which covers sweat and light splashes during activities like jogging and cycling — not pool or open-water swimming. For lap swimming you want the POLVCDG's IPX8 rating instead.
No. Bluetooth signals don't transmit through water, so underwater listening runs in MP3 mode from the 32GB of built-in memory. Switch to Bluetooth 5 mode once you're out of the water for calls and streaming.
It depends on what you want. The POLVCDG's open-ear design keeps your ear canals clear so you hear traffic and surroundings, and it adds active noise cancellation for calls. The Crave Octave gives you a sealed in-ear fit with IPX4 sweat resistance, which some runners prefer for bass and isolation.
I can't quote prices here — the page has a button to check the latest price on Amazon. What I can say is that the POLVCDG buys you waterproofing, built-in storage and a longer battery, so it justifies more if you'll actually swim or train phone-free. If you only need everyday earbuds, the Crave Octane covers the basics.
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See also: MONODEAL Swimming Headphones-IP68 vs Kinglucky Next-gen Clip, Bandou 3.0 vs SAMVEK Swimming Headphones Underwater, MARLALL Swimming Headphones-Bone Conduction vs Silisoundtech Bone Cond