How We Research
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
• JBL Endurance Zone Open – biggest strength: A dual-form design with two earbuds plus a charging case, giving a combined 32 hours of playtime (8 in the buds, 24 in the case) and 4-mic beamforming call clarity with a windproof design.
• JBL Endurance Zone Open – biggest trade-off: It is a two-piece kit with a case to keep track of, it has no active noise control, and the USB-C cable is not included.
• Plufunex Bone Conduction Headphones – biggest strength: A 32 g single-piece bone conduction band with 13+ hours of continuous battery, Bluetooth 6.0 multipoint, physical buttons and a fit engineered around glasses.
• Plufunex Bone Conduction Headphones – biggest trade-off: Bone conduction inherently trades bass depth and passive isolation for awareness, the claimed 13 hours is roughly a third of what the JBL setup offers across a week, and it is explicitly not made for swimming or water immersion.
• Who each is for: JBL Endurance Zone Open suits runners and gym-goers who want a normal earbud experience with case-based top-ups; Plufunex suits cyclists, glasses wearers and all-day wearers who want one lightweight band that never needs a case.
The JBL Endurance Zone Open is, in plain terms, a pair of open-ear earbuds that happen to be built like workout gear. Each bud uses JBL OpenSound technology: directional drivers plus an adaptive bass boost, aimed at giving you crisp highs and rich mids while letting outside sound in. That is the whole point of the open-ear category — you hear your music and the traffic, the gym chatter, the cyclist calling out behind you. JBL pairs that with an 11 mm dynamic driver, a 20 Hz–20,000 Hz frequency range and 32 ohm impedance, which is a conventional full-range setup rather than a bone conduction transducer.
The fit story is the other half. A liquid silicone earhook plus memory wire is designed to mould to your ear shape and stay put, which matters most when you are running intervals or moving through a circuit. The IP68 rating means sweat, rain, saltwater and sand are all inside the design brief, and the buds handle humidity and high temperatures too. Battery is generous in the way earbuds usually are: roughly 8 hours in the buds and another 24 in the case, so about 32 hours total, with a 10-minute USB-C top-up worth around 3 hours. Calls get four microphones — two beamforming mics per bud — with a hydrodynamic windproof design, which is the part I would care about if I took work calls mid-run. Touch controls handle playback and summon Google Assistant or Siri, Bluetooth 5.3 handles the connection, and the whole thing weighs 3.2 ounces.
Buy it if you want a real earbud experience — stereo imaging, a case that recharges you on the move, touch controls you can learn in a minute — and you train hard enough that IP68 and a lock-down earhook actually matter. Skip it if you hate keeping track of a case, you want bone conduction specifically because you wear glasses or a helmet, or you need active noise cancellation. There is none here — the open design is the opposite of isolation. Also note the box includes the buds, the charging case, a warranty sheet and the manual, but not a cable, so plan for that.
The Plufunex Bone Conduction Headphones take the other route entirely. Instead of sitting in your ear, a 16 mm bone conduction driver transmits sound through your cheekbone, leaving your ear canal completely open. The practical result is total environmental awareness — approaching cars, voices, footsteps, your own breathing — which is exactly why cyclists, trail runners and city commuters gravitate to this format. The trade-off is physics: bone conduction drivers simply do not push air the way a dynamic driver does, so expect a leaner low end and less perceived loudness at the same volume setting. The spec sheet backs that up with an 8 ohm impedance, 91 dB sensitivity and a 20 kHz frequency response.
Where Plufunex has clearly thought hardest is fit and daily wear. The unit weighs 32 g, uses an ergonomic wraparound ear-hook structure with 35 degrees of adjustability, and — this is the detail I like most — it is explicitly engineered to sit comfortably with everyday glasses, prescription glasses, cycling eyewear, sports eyewear and smart glasses. If you have ever had a headband fight with your frames, that sentence is the whole pitch. Controls are physical buttons, which sounds boring until you are sweating through a set and touch controls start misreading your fingers. Bluetooth 6.0 with multipoint lets you pair two devices at once and hop between a laptop and a phone without re-pairing, with a stated range of about 33 feet.
Battery is the headline spec: up to 13+ hours of continuous playback on one charge, charged in roughly 2 hours, plus a 10-minute magnetic charge that buys about 75 minutes of listening. That is a single-piece device with no case to carry — you charge it, wear it, and forget it. The IP68 rating covers sweat, rain and demanding weather, though Plufunex is upfront that it is not intended for underwater swimming or water immersion.
Buy it if you wear glasses or helmets, want one lightweight band with no case, need multipoint switching between two devices, or ride and run in traffic where awareness is non-negotiable. Skip it if you care about deep bass, want isolation from gym noise, or plan to swim laps.
Side-by-Side: Which Should You Choose?
• Best for all-day single-charge wear → Plufunex Bone Conduction Headphones. 13 hours without ever touching a case, versus JBL's roughly 8 hours per bud session.
• Best for glasses and helmet wearers → Plufunex Bone Conduction Headphones. It is purpose-built around eyewear and has 35° adjustable hooks.
• Best for call quality in wind → JBL Endurance Zone Open. Four beamforming mics with a hydrodynamic windproof design is a more serious call setup than a bare bone conduction mic array.
• Best for bass and full-range sound → JBL Endurance Zone Open. An 11 mm dynamic driver with adaptive bass boost will simply move more air than a bone conduction driver.
• Best for two-device juggling → Plufunex Bone Conduction Headphones. Bluetooth 6.0 multipoint beats Bluetooth 5.3 single-connection convenience here.
• Best for sweaty-hand control → Plufunex Bone Conduction Headphones. Physical buttons versus touch, and that matters mid-workout.
• Best for swimming-adjacent training → JBL Endurance Zone Open. Both are IP68, but Plufunex explicitly excludes underwater use, while JBL names saltwater, sand and humidity as in-scope.
In my opinion, I would buy the JBL Endurance Zone Open. The reason is not the brand — it is the math of the design: 32 hours combined with a case, an 11 mm dynamic driver, four beamforming mics and touch controls make it the more complete everyday headphone for someone who runs, lifts and takes calls. I would only switch to the Plufunex Bone Conduction Headphones if glasses or a helmet made earhooks impractical, or if I wanted one 32 g band with 13 hours on board and nothing else to remember. Both are IP68 and both are built for movement. Pick based on your ears, your eyewear and whether you want a case in your bag. Check the current price on Amazon before deciding, since value shifts over time.
Neither is universally better. JBL wins on battery total, bass and call microphones; Plufunex wins on glasses compatibility, multipoint Bluetooth and single-charge all-day wear. It comes down to whether you want earbuds with a case or a bone conduction band.
With the Plufunex, yes — the design is specifically engineered to fit with everyday glasses, prescription glasses, cycling eyewear, sports eyewear and smart glasses, and the 35° adjustable hooks help you dial in the fit. That is one of the strongest reasons to choose it over an earhook earbud.
JBL totals up to 32 hours (8 in the earbuds plus 24 in the case) with a 10-minute quick charge adding about 3 hours. Plufunex delivers up to 13+ hours continuous with a 10-minute magnetic charge giving roughly 75 minutes. JBL lasts longer overall; Plufunex lasts longer per uninterrupted session.
No. Both carry an IP68 rating for sweat, rain, saltwater and sand, but Plufunex explicitly states the headphones are not intended for underwater swimming or water immersion. Treat both as tough training gear, not swim gear.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.