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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 7 min read · Independent comparison
If you want a rugged, fully sealed open-ear set that survives sweat, rain and heavy training days on a single 8-hour charge, choose mojawa Aerra IP67; if you need longer total playtime, a charging case, spatial audio and app-level control, choose Cleer ARC 4.
• mojawa Aerra IP67 — biggest strength: a fully sealed IP67 body with bone conduction drivers, so it keeps sound going while your ears stay completely open to traffic, trails and training partners.
• mojawa Aerra IP67 — biggest trade-off: no charging case and no companion app. You get one 8-hour window per charge plus a 5-minute top-up, and that's it.
• Cleer ARC 4 — biggest strength: a 34-hour total runtime split across the buds and a charging case, plus Dolby Atmos with head tracking, Snapdragon Sound and a real EQ app.
• Cleer ARC 4 — biggest trade-off: it's a bulkier, more complex package with a case to carry, and its IPX7 rating is splash-and-sweat resistant rather than the fully sealed IP67 build of the mojawa.
• Who each pick is for: the mojawa Aerra IP67 suits runners, cyclists and anyone who wants maximum weather-proofing with zero extras; the Cleer ARC 4 suits all-day users, commuters and movie/game listeners who want features and runtime.
The Aerra IP67 is built around one idea: get out of the way and keep working. It's an open-ear set using a bone conduction driver, so nothing sits inside your ear canal. That means no pressure during long wear and no blocked ears when you're riding in traffic or running on a shared path. If you've ever pulled an earbud out at a crossing to hear what's coming, this is the category that solves it.
The headline spec is that IP67 rating. The body is described as integrated and fully sealed, which is exactly the scenario you'd want for heavy sweating or getting caught in the rain mid-run. Combine that with an open-ear fit that stays put without insertion, and you get a set that's clearly aimed at sport rather than desk work. It also carries a two-year warranty, which is worth noting for a device you'll be abusing outdoors.
Who should buy it: runners, cyclists, hikers and gym-goers who train hard, sweat heavily and want a genuinely rain-proof open-ear set with a secure, pressure-free fit. Who should skip it: anyone who wants a charging case for multi-day trips, app-based EQ, or spatial audio for movies and gaming. There's no app here, no case, and no head tracking — just the headphones, a cable and a manual.
Cleer ARC 4: Who It's For
The Cleer ARC 4 Plus is the feature-dense option. It's still an open-ear design with an earhook shape, so you keep situational awareness, but it packs in a lot more technology. The standout is Dolby Atmos with precise head tracking, which is genuinely unusual in this category and aimed squarely at people who watch movies or play games on a phone, tablet or laptop and want that 3D, concert-hall feeling without sealing their ears.
Battery is the other big story: 9 hours per charge plus 25 more from the charging case, for 34 hours total. A 10-minute quick charge buys roughly 3 hours of playtime. That's a fundamentally different ownership experience from the mojawa — you can toss the case in a bag and go a week of commutes without thinking about a charger. The case itself is compact, at about 3.3 by 2.36 by 0.8 inches and 97 grams.
Sound quality leans on Snapdragon Sound with aptX Adaptive and lossless support, plus DBE 4.0 bass enhancement for fuller low frequencies. The description also references THX-certified sound and hi-res audio, and the driver is a dynamic driver covering 20Hz to 20,000Hz. Bluetooth 5.4 handles multipoint so you can pair two devices and switch between calls and music. Controls are the widest of the two: touch, volume, app and voice, with EQ, firmware updates and touch programming all handled through the Cleer+ app. Dual noise-canceling microphones cover calls.
Water resistance is IPX7 — sweatproof and rainproof, with premium materials said to resist scratches. That's a solid rating, but note the framing: it's about withstanding workouts and weather, whereas the mojawa's IP67 is described as a fully sealed integrated body.
Side-by-Side: Which Should You Choose?
• Best for maximum weather-proofing → mojawa Aerra IP67. IP67 with a fully sealed integrated body is the tougher spec for heavy sweat and rain.
• Best for battery life → Cleer ARC 4. 34 hours total (9 + 25 via case) versus 8 hours on a single charge.
• Best for quick top-ups on the go → Cleer ARC 4. A 10-minute charge gives about 3 hours, compared with 5 minutes for roughly 1.5 hours on the mojawa.
• Best for movies, games and spatial audio → Cleer ARC 4. Dolby Atmos with head tracking is the only 3D audio option between the two.
• Best for sound tuning and control → Cleer ARC 4. The Cleer+ app adds custom EQ, firmware updates and programmable touch controls; the mojawa relies on three built-in modes and touch control only.
• Best for the simplest, most secure sport fit → mojawa Aerra IP67. Bone conduction with an open-ear shape and no case to carry is the leaner setup for running and cycling.
• Best for multipoint and low-latency connections → Cleer ARC 4. Bluetooth 5.4 and Snapdragon Sound edge out Bluetooth 5.2 on paper.
• Best for warranty coverage → mojawa Aerra IP67. Two years versus one.
• Best for going case-free → mojawa Aerra IP67. Nothing extra to pack, charge or lose.
In my opinion, the Cleer ARC 4 is the better all-round buy for most people. The 34-hour case-backed runtime, Dolby Atmos with head tracking, Snapdragon Sound, Bluetooth 5.4 and the Cleer+ app give you far more device for the money across commuting, calls, music and media. It's the set I'd recommend if you want one pair to do everything reasonably well.
That said, I'd pick the mojawa Aerra IP67 if your priority is pure sport durability. The fully sealed IP67 build, bone conduction fit, two-year warranty and case-free simplicity make it the more focused training tool — especially if you sweat hard, ride in the rain, or just don't want another case to manage. Decide which of those two lives you actually live, then check the current price on Amazon for the one that fits.
FAQ
Not universally. The Cleer ARC 4 wins on battery life, spatial audio, connectivity and app control, while the mojawa Aerra IP67 wins on water resistance (IP67 vs IPX7), warranty length and simplicity. Which is "better" depends entirely on whether you prioritize features or ruggedness.
The Cleer ARC 4 clearly lasts longer — 9 hours per charge plus 25 from the case for 34 hours total, versus 8 hours per charge on the mojawa with no case. If you hate charging often, that gap matters.
Yes. Its IP67 rating comes from a fully sealed, integrated body that's designed to handle heavy sweating and rain during outdoor activity. The Cleer ARC 4 is IPX7, which is also sweatproof and rainproof, but the mojawa's build is described as fully sealed.
Yes. The Cleer+ app lets you customize EQ, update firmware and program touch controls. The mojawa Aerra IP67 has no companion app — you rely on its three built-in audio modes and touch controls instead.
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