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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-20 · 7 min read · Independent comparison
• iPhanmis X17 — biggest strength: a smartwatch and earbuds in one device, with a 1.27-inch round AMOLED screen, health tracking, and earbuds that recharge inside the watch for 2–3 cycles.
• iPhanmis X17 — biggest trade-off: it is not a dedicated audio product. Earbud music time is about 3.5 hours, the earbuds use Bluetooth 5.0, and the watch itself runs Bluetooth 4.0.
• POLVCDG Bone Conduction Headphones — biggest strength: a purpose-built open-ear sport design — 29-gram flexible titanium frame, IPX6 water resistance, ENC call noise reduction, and up to 10 hours of playback on a charge.
• POLVCDG Bone Conduction Headphones — biggest trade-off: no display, no health tracking, no watch functions. It is one job — audio — and it does only that job.
• Pick iPhanmis X17 if you want one gadget on your wrist that handles calls, music, steps, sleep and cycle tracking.
• Pick POLVCDG if you want your ears open to traffic and your headphones to survive rain, sweat and long sessions.
The X17 is a hybrid. On the wrist it is a round 43mm smartwatch with a 1.27-inch AMOLED touch display and a glass lens over a zinc aluminium alloy shell. Inside the watch sits a 205mAh polymer battery, and the matching earbuds carry a 25mAh battery each. The clever part is the storage-and-charge arrangement: the earbuds dock in the watch and the watch tops them up for 2–3 cycles. That means one charging routine for two devices — charge time is roughly 1–2 hours, and the earbuds give about 3.5 hours of music per use.
On the health and lifestyle side, the X17 covers a lot of ground for a single wearable. It handles 24-hour continuous heart rate, sleep monitoring, blood oxygen (SpO2), a female cycle tracker, a pedometer with calorie and step counting, and multi-sport modes with exercise records for steps, calories and mileage. The companion app is FitCloudPro, and the watch works with Android 4.4 and above and iOS 8.0 and above. There is also GPS via your smartphone, Find My Phone, reminders, weather, alarm, information alerts and shake-to-take-photos. Water resistance is rated IP67, so splashes and handwashing are fine, though I would not treat it as swim gear.
Who should skip it? Anyone whose priority is serious audio. The earbuds are conventional in-ear TWS units with Bluetooth 5.0, not open-ear. They sit in your ear canal, so you lose the environmental awareness runners depend on, and 3.5 hours of music per earbud session is short for long rides or all-day listening. If audio is the main event, keep reading.
POLVCDG Bone Conduction Headphones: Who It's For
The POLVCDG is a single-purpose sports headphone, and it is very clear about that. It uses bone conduction drivers rated 20Hz–20,000Hz with 8-ohm impedance and 16mm drivers, so sound reaches you without plugging your ear canals. That open-ear placement is the whole point: you keep 360° awareness of traffic, other runners, cars and your surroundings. The frame is flexible titanium coated in skin-friendly material and adapts to different head shapes, and the whole thing weighs just 29 grams, which is the kind of number that matters on a two-hour ride.
Durability and battery are where it earns its place in a gym bag. The rating is IPX6, so sweat and rain are handled — though the manufacturer is explicit that it is not a swimming headphone and should not be used underwater. Battery life is up to 10 hours of music, calls and podcasts on one charge, and it recharges over Type-C. Calls get ENC noise reduction plus a built-in mic, which is the feature that keeps voice quality usable when you are breathing hard on a climb or standing near a busy road. Controls are touch-based with volume control, and the box includes the headset, a charging cable, an adjustable elastic band and a manual. Bluetooth version is listed as 4.
Who should buy it? Runners, cyclists, hikers, gym-goers and skiers — anyone who wants music without sealing off the world. If you ride near traffic or run on shared paths, open-ear is a safety decision as much as a comfort one. The green colour, plastic-and-rubber build and adjustable band suit an active, casual look rather than a dressy one.
Side-by-Side: Which Should You Choose?
• Best for battery life → POLVCDG Bone Conduction Headphones. Up to 10 hours per charge versus roughly 3.5 hours of earbud music on the X17.
• Best for features in one device → iPhanmis X17. Watch, earbuds, health tracking and call handling in a single item you wear on your wrist.
• Best for running and cycling safety → POLVCDG. Open-ear bone conduction keeps your ear canals unobstructed so you hear traffic and surroundings.
• Best for health and fitness data → iPhanmis X17. Heart rate, SpO2, sleep, female cycle tracking, pedometer, calories, mileage and multi-sport modes.
• Best for sweat and rain during workouts → POLVCDG. IPX6 is built for exercise conditions; the X17 is IP67 on the watch but its earbuds are standard in-ear units.
• Best for clear calls in noisy places → POLVCDG. ENC call noise reduction with a built-in mic is aimed squarely at that problem.
• Best for a compact everyday carry → iPhanmis X17. The earbuds store and recharge inside the watch, so there is no separate case to lose.
• Best for long listening sessions → POLVCDG. Ten hours of playback covers a full training block, a long ride or a workday.
If I had to pick one, I would buy the POLVCDG Bone Conduction Headphones when audio and activity are the point — the open-ear safety, 29-gram frame, IPX6 rating and up to 10 hours of playback make it the stronger tool for training. I would buy the iPhanmis X17 instead if I wanted a watch first and earbuds second: the AMOLED display, health tracking and in-watch earbud charging make it the better everyday companion. In my opinion, the deciding question is simple — do you want headphones that happen to be sporty, or a smartwatch that happens to include earbuds?
FAQ
The X17 watch uses a 205mAh battery and can recharge its earbuds 2–3 times, while the earbuds themselves provide around 3.5 hours of music per session. The POLVCDG is rated for up to 10 hours of music, calls and podcasts on a single charge.
Rain and sweat are fine — it carries an IPX6 waterproof rating. Swimming is not: the manufacturer states it is not a swimming headphone and is not suitable for underwater use.
They solve different problems, so value depends on your use. If you want one device covering calls, music and health tracking, the X17 packs more functions into a single item. If you want dedicated sport audio with long battery and open-ear safety, the POLVCDG is the more focused buy. Check the current price on Amazon for both before deciding.
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