We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 8 min read · Independent comparison
If you want a neckband-style pair with huge battery life, fast top-up charging and punchy in-ear bass for music and calls all day, choose One Plus Bullets; if you need open-ear earbuds that sit outside your ear canal for running, workouts and commuting awareness, choose ROEL-PLAY Open Ear.
Both are wireless Bluetooth headphones, and on paper they look similar. In reality they solve two different problems. One is built around a silicone neckband, in-ear tips and a battery that keeps going for a day and a half. The other is built around a hook that rests on your ear, a charging case with a screen, and an open design that lets the world in. That single design split is what should decide your purchase, not the spec sheet.
• One Plus Bullets — biggest strength: 36 hours of playback with a 10-minute charge giving 27 hours, plus 12.4 mm dynamic bass drivers and 3D Spatial Audio. Great for marathon listening and long calls.
• One Plus Bullets — biggest trade-off: It's an in-ear neckband with active noise cancellation and no jack, so it seals your ears and you stay tethered to a band around your neck. No manufacturer warranty — the seller offers 30-day free returns.
• ROEL-PLAY Open Ear — biggest strength: Open-ear hook design that keeps your ear canal clear, 360° spatial audio, dual noise-cancelling mics and a charging case with an LED power display.
• ROEL-PLAY Open Ear — biggest trade-off: Open-ear means less isolation and less deep bass seal than in-ear tips, and the button-plus-touch control scheme takes some learning.
• Who One Plus Bullets is for: commuters, call-heavy workers and music listeners who want maximum battery and immersive in-ear sound.
• Who ROEL-PLAY Open Ear is for: runners, gym-goers and cyclists who want to hear traffic and surroundings while staying aware.
The OnePlus Bullets Wireless Z3 is a neckband headphone, and that shapes everything. Instead of a charging case, you get a silicone band that hangs around your neck with in-ear tips on short cables. The earpiece shape is in-ear, the enclosure is skin-friendly silicone, and the whole thing weighs 26 grams. It comes in a single Mambo Midnight colorway. If you've used a neckband before, you know the appeal: you pull it out of a bag, pop the tips in, and it's already charged and ready.
The headline feature is the battery. OnePlus claims 36 hours of average life and 21 hours of talk time, with a 10-minute charge unlocking 27 hours of playback. A full charge takes about 30 minutes. That's the kind of number that changes how you use headphones — you stop thinking about charging them entirely. For a week of commuting and calls, you can realistically charge it once.
Sound is built around 12.4 mm dynamic bass drivers with 3D Spatial Audio and a Sound Master EQ with BassWave presets. Bass-forward is the intent here, and the in-ear seal is what makes that possible. Active noise cancellation and touch controls round it out, and AI call noise cancellation keeps your voice clear. Bluetooth 5.4 with Google Fast Pair handles the connection, and IP55 water and sweat resistance means rain and workouts won't kill it.
Buy it if you want the longest possible battery, deep in-ear bass, and active noise cancellation, and you don't mind a neckband. Skip it if you need to hear your surroundings while running, or you prefer a fully wireless earbud that lives in a case. Note the warranty situation: no manufacturer's warranty, only 30-day free returns from the seller. That's worth knowing before you commit.
The ROEL-PLAY Open Ear is the opposite philosophy. These are hook-style open-ear earbuds, meaning the driver sits outside your ear canal rather than plugging it. The enclosure is ABS plastic and the color is Orange, with a matching Orange charging case. The fit uses a 3-point ergonomic positioning system, and the brand's pitch is zero pressure on the ears even after all-day wear, stable enough for running without falling off. If in-ear tips have ever made your ears ache or feel blocked, this is the design that fixes that.
On audio, ROEL-PLAY specs a composite high-low frequency diaphragm with digital sound enhancement for 360° spatial audio, claiming punchy bass, clear mids and bright treble. Directional sound transmission is meant to reduce leakage so people around you don't hear your music. There's also an ambient sound mode, which makes sense for an open design — you're supposed to hear traffic, footsteps and voices. For cycling and street running, that's a genuine safety argument, not a marketing one.
Calls get dual enhanced noise-cancelling microphones to cut wind and background noise. Controls are a mix of push button and touch: play/pause, track skip, volume, answer/reject, and voice assistant. The charging case has an LED digital display showing the battery level of both case and buds, which removes the guesswork of "is this thing charged?" Bluetooth 5.4 dual-chip is specced for a stable connection and 38 ms low latency, which matters for gaming and video sync. Single or dual earbud use is supported, and it works across iOS, Android, HarmonyOS, Windows, tablets and laptops. Sweatproofing is claimed for workouts.
Buy it if you run, cycle, lift, or work in an environment where you need to stay aware, and you want a case with a visible battery readout. Skip it if you want maximum isolation, the deepest possible bass, or you dislike fiddling with button-plus-touch controls.
• Best for battery life → One Plus Bullets. 36 hours playback, 21 hours talk time, and 27 hours from a 10-minute charge is a different league from almost any case-based earbud.
• Best for running and outdoor safety → ROEL-PLAY Open Ear. Open-ear design plus ambient sound mode means you hear traffic while you train.
• Best for noise isolation and focus → One Plus Bullets. Active noise cancellation and in-ear tips block the world out; open-ear designs deliberately do the opposite.
• Best for all-day comfort if your ears ache → ROEL-PLAY Open Ear. The hook design keeps pressure off the ear canal.
• Best for deep bass → One Plus Bullets. The 12.4 mm dynamic drivers plus the in-ear seal is the combination that produces real low-end punch.
• Best for gaming and video sync → ROEL-PLAY Open Ear. 38 ms low latency is specced specifically for audio-video sync.
• Best for charging convenience → ROEL-PLAY Open Ear. The LED display on the case shows real-time battery for both case and buds.
• Best for call clarity in noisy places → a tie, leaning One Plus Bullets. Both claim noise-cancelling mics, but the in-ear fit plus AI call noise cancellation gives OnePlus the edge in my reading.
• Best for water and sweat resistance → One Plus Bullets. It's explicitly IP55-rated; ROEL-PLAY says sweatproof but gives no IP number.
If I had to pick one, I'd buy the OnePlus Bullets Wireless Z3. In my opinion, the 36-hour battery, the 10-minute fast charge, the 12.4 mm bass drivers and active noise cancellation make it the more versatile headphone for most people — commuting, working, calls and long listening sessions. The IP55 rating also gives it a durability edge that the ROEL-PLAY's unnumbered sweatproofing can't match.
That said, I'd recommend the ROEL-PLAY Open Ear without hesitation for one specific buyer: the runner, cyclist or gym-goer who needs to hear the world. If ear fatigue or blocked ears is your problem, the open-ear hook is the right answer, and the LED battery display is a genuinely useful touch. Just go in knowing you're trading isolation and bass depth for awareness and comfort.
FAQ
Yes. Prices on both move around, and this page deliberately doesn't quote them. Use the "Check latest price on Amazon" button on this page to see the current figure for whichever model you're leaning toward, then compare against what you actually need from the specs above.
The ROEL-PLAY Open Ear, in my opinion. Its open-ear hook design is explicitly built for stable, pressure-free wear during running, and the ambient sound mode keeps you aware of traffic. The OnePlus Bullets does have IP55 water and sweat resistance, so it can handle workouts too — but the neckband and sealed tips make it a less natural fit for outdoor training.
The OnePlus Bullets, for blocking out the world. It has active noise cancellation plus an in-ear seal, which is the combination that actually reduces what you hear. The ROEL-PLAY's noise cancelling is limited to its call microphones — it's designed to let ambient sound in, not shut it out. If quiet is the priority, pick the OnePlus Bullets; if awareness is the priority, pick the ROEL-PLAY.
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