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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want lightweight in-ear sport sound with a secure fit for gym sessions and runs, choose 1MORE iBFree in-Ear Earphones; if you need open-ear headphones that survive full swimming and play music without your phone, choose Roujune Bone Conduction Headphones.
• 1MORE iBFree biggest strength: a genuinely sport-tuned in-ear design — 14 g, IPX4 water resistance, aptX Bluetooth audio and a secure-fit system with extra ear tips and sport grips.
• 1MORE iBFree biggest trade-off: it is an in-ear pair with IPX4 only, so it handles sweat and light rain but not swimming, and the seal means you stay partly cut off from your surroundings.
• Roujune biggest strength: IPX8 waterproofing plus a 32 GB MP3 mode, so it keeps playing underwater where Bluetooth cannot reach — with open-ear comfort and 8 hours of playtime.
• Roujune biggest trade-off: bone conduction sits outside your ear canal, so bass and isolation are inherently weaker than a sealed in-ear, and you must manage MP3 files yourself for swimming.
• Who the 1MORE is for: runners, gym-goers and commuters who want punchy in-ear audio and a fit that stays put.
• Who the Roujune is for: swimmers, open-ear listeners and anyone who wants music with zero phone nearby.
The iBFree is built around one idea: sound quality first, movement second, and it does both. Inside is a dynamic driver with a "PET + aerospace-level titanium" diaphragm, paired with a CSR Bluetooth chip and the aptX codec. In plain terms, that combination is designed to deliver fuller, more detailed wireless audio than a basic SBC-only connection — which is exactly what you want when the earphone is sitting right in your ear canal and every weakness in the signal is audible. The frequency range covers 20 Hz to 20,000 Hz, the standard full-range span.
Then there's the fit. At just 14 g with an ergonomically inclined angle, the iBFree is engineered to sit in the ear rather than hang off it. 1MORE includes extra ear tips and sport grips, and the stated goal is a secure fit that doesn't fall out mid-workout. If you've ever had a bud pop loose halfway through a sprint, you know why that matters. Battery lands at 8 hours of playback and 240 hours of standby, with a 2-hour charge time, and Bluetooth V4.1 gives you roughly 32 feet (10 m) of range — enough to leave your phone on a bench or in a bag while you move around a gym floor. IPX4 water resistance covers sweat and light rain, and an in-line remote handles volume, playback and calls without you reaching for your phone.
Buy it if you want an in-ear sport earphone with a proper audio chain, a low weight and a fit system aimed at high-movement training. Skip it if you swim, or if you specifically want to hear traffic and surroundings while you run — an in-ear with sound isolation is the wrong tool for that job. Note the warranty description is short (30 days), which is worth factoring in. Also worth knowing: it's not fully wireless in the strictest sense — there's an in-line control box on the cable, so it's a wireless neckband-style setup rather than two independent buds.
The Roujune X20 solves a problem the 1MORE simply can't: it works in water. It carries IPX8 waterproofing, which is the rating tier associated with continuous submersion, and it's explicitly positioned as a swimming headphone. That rating is the headline feature, because water blocks Bluetooth signals entirely — which is why the X20 has a 32 GB internal memory and an MP3 mode. You load your music onto the headphones, double-press the power button to switch out of Bluetooth mode, and the headphones play from local storage with no phone involved. Supported file formats include MP3, WMA, FLAC, APE and WAV.
The second structural difference is the open-ear, bone-conduction design. Instead of sealing your ear canal, it vibrates against the bone near your ear and leaves the canal open. The payoff is comfort and awareness — nothing jammed in your ear, and you can still hear your surroundings. The trade-off is physics: an open-ear driver naturally delivers less bass impact and less isolation than a sealed in-ear. Noise control here is listed as passive, meaning it relies on the open design rather than active processing. The frame is made from silicone and titanium, which is a sensible pairing for something that gets wet regularly — titanium for structure, silicone for grip and skin comfort.
Battery life is 8 hours, matching the 1MORE on paper, and the Bluetooth version is listed as 5.4, a much newer generation than the 1MORE's V4.1. You also get a 2-year manufacturer warranty, which is a meaningful difference if durability matters to you. Buy it if you swim, you want open-ear awareness, or you want music that doesn't depend on your phone. Skip it if you mainly want deep, isolated sound for the gym — you'll get more low-end satisfaction from the sealed in-ear design.
• Best for swimming → Roujune Bone Conduction Headphones. IPX8 waterproofing plus an MP3 mode with 32 GB of storage is the only way to get music underwater here.
• Best for sound quality and bass → 1MORE iBFree in-Ear Earphones. A sealed in-ear with a titanium-diaphragm dynamic driver and aptX will simply deliver more low-end and detail than an open-ear design.
• Best for a secure, locked-in fit during hard training → 1MORE iBFree in-Ear Earphones. 14 g, an inclined angle, plus extra ear tips and sport grips are all aimed at staying put.
• Best for hearing your surroundings → Roujune Bone Conduction Headphones. The open-ear design leaves your ear canal clear while it plays.
• Best for newer Bluetooth → Roujune Bone Conduction Headphones. Bluetooth 5.4 versus Bluetooth V4.1 is a real generational gap in connection efficiency.
• Best for cable-free freedom during workouts → Roujune Bone Conduction Headphones. Fully wireless open-ear versus an in-line control box on the 1MORE.
• Best for commuting and calls → 1MORE iBFree in-Ear Earphones. The in-line remote with mic handles volume, playback and calls directly.
• Best warranty coverage → Roujune Bone Conduction Headphones. A 2-year manufacturer warranty versus 30 days described on the 1MORE.
• Best for light rain and sweaty sessions → either. The 1MORE's IPX4 covers sweat and light rain; the Roujune goes further with IPX8.
In my opinion, the Roujune Bone Conduction Headphones are the more versatile pick for most people shopping this comparison. The IPX8 rating, the 32 GB MP3 mode and the 2-year warranty cover a much wider range of situations — swimming, open-ear running, and phone-free listening — and Bluetooth 5.4 is the more modern connection.
That said, if your training never involves water and you care most about how your music actually sounds, I would buy the 1MORE iBFree. A sealed in-ear with a titanium-diaphragm driver and aptX will beat an open-ear design on bass and detail every time, and the 14 g build with sport grips is purpose-built for the gym. Decide which of those two priorities is yours, and the choice is easy.
Yes — that's its core purpose. It carries IPX8 waterproofing and a 32 GB MP3 mode so it can play stored music underwater, where Bluetooth signals can't travel. You need to load supported files (MP3, WMA, FLAC, APE or WAV) and switch modes before you get in.
They're rated IPX4, which covers sweat, splashing and light rain. That's enough for outdoor runs in drizzle and heavy gym sessions, but it is not a swimming rating — don't submerge them.
For bass and detail, the 1MORE iBFree is the stronger design on paper. Its sealed in-ear fit, dynamic driver with a titanium diaphragm and aptX codec give it an advantage over an open-ear bone conduction headphone, which by design delivers less isolation and less low-end.
The 1MORE iBFree fits that use case best: 14 g, extra ear tips and sport grips for a secure fit, in-line controls for calls and playback, and 8 hours of playback. The Roujune makes more sense if you swim or want to hear traffic while you run.
Yes — both are sold through Amazon and pricing changes over time, so check the current price on Amazon using the button on this page before you commit. The right pick depends on whether you need swimming capability or in-ear sound quality.
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