We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 7 min read · Independent comparison
If you want an all-round wireless neckband for music, calls and workouts, choose One Plus Bullets; if you need to replace a lost or damaged right earbud for your Samsung Galaxy Buds 3 Pro, choose korllo Single Right Replacement. These two products sit in completely different corners of the audio world, and the right pick comes down to one question: are you buying a whole headset, or repairing one you already own?
One Plus Bullets vs korllo Single Right Replacement at a Glance
• One Plus Bullets — biggest strength: a full-featured neckband with 12.4 mm dynamic bass drivers, 3D Spatial Audio, up to 36 hours of playback and a 10-minute charge that yields 27 hours of listening.
• One Plus Bullets — biggest trade-off: it is a complete headset, so it is not a fix for a single dead earbud, and it relies on a neckband design rather than being fully cable-free.
• korllo Single Right Replacement — biggest trade-off: it only works with the Galaxy Buds 3 Pro — it will not pair with the standard Galaxy Buds 3, and it is sold as a pre-owned, tested right earbud rather than a new pair.
• Pick One Plus Bullets if you want one purchase that covers music, calls and workouts end to end.
• Pick korllo Single Right Replacement if you already own Galaxy Buds 3 Pro and only the right earbud is missing or broken.
The Bullets Wireless Z3 is a neckband headset built around convenience and stamina. The headline numbers are simple: up to 36 hours of continuous playback and 21 hours of talk time on a charge, with a 10-minute top-up giving you 27 hours of playback. That charging math is the real story here — it means a nearly empty headset can be revived during a coffee break and still carry you through a long trip or a full workday of calls.
Sound is handled by 12.4 mm dynamic bass drivers, which is a large driver for an in-ear neckband and points toward a bass-forward tuning. OnePlus pairs that with 3D Spatial Audio and a Sound Master EQ with BassWave, offering four presets so you can shift the character of the sound to match the track or your mood. On the practical side you get AI call noise cancellation for voice clarity, Bluetooth 5.4 with Google Fast Pair for quick pairing, active noise cancellation with touch controls, and an IP55 rating for water and sweat resistance. The neckband itself is skin-friendly silicone, and the whole thing weighs 26 g.
Who should buy it: commuters, gym-goers, students and anyone who takes a lot of calls and wants a headset that survives sweat, charges fast and rarely needs to visit a charger. The neckband format also means you can pop the buds out and let them hang rather than pocketing loose earbuds.
korllo Single Right Replacement: Who It's For
This is not a headset you buy for its own sake. It is a repair part: a single right earbud for the Samsung Galaxy Buds 3 Pro, sold as pre-owned but tested and fully functional. If you lost your right bud down a drain or it stopped charging, this is the piece that gets you back to a working pair without replacing the whole set.
The compatibility notes are the most important thing to read before buying. It is designed for the Galaxy Buds 3 Pro AI version (model SM-R630) and matches the original's size and interface protocols so it seats in the charging case and syncs device information properly. It is explicitly not compatible with the standard Galaxy Buds 3, so if you own the non-Pro model, this is the wrong part. korllo also states the earbud carries the same high-definition speaker unit and AI chip as the original, with support for 360° spatial audio, ANC and ambient sound mode, and it is meant to pair and work alongside your existing left earbud.
The housing is a metallic or metallic-looking finish in a silvery color, and it uses a dynamic driver, Bluetooth 5, active noise cancellation and in-ear placement with no jack. korllo backs it with a 1-year limited warranty covering manufacturing defects and functional issues under normal use — physical damage, misuse and water exposure are excluded. There is also a pairing procedure to follow: remove the Buds 3 Pro from your phone's Bluetooth list, put the replacement bud in the case, hold the case button for about three seconds until the LED flashes, then re-pair from your device's Bluetooth menu.
Who should buy it: Galaxy Buds 3 Pro owners who need the right side replaced and want to keep using the left bud and case they already have. Who should skip it: anyone without Galaxy Buds 3 Pro, anyone who wants a brand-new sealed pair, and anyone uncomfortable with a pre-owned component — even a tested one — as the solution.
Side-by-Side: Which Should You Choose?
• Best for battery life and fast charging → One Plus Bullets. Up to 36 hours of playback, 21 hours of talk time and 27 hours from a 10-minute charge.
• Best for sound customization → One Plus Bullets. 12.4 mm dynamic bass drivers, 3D Spatial Audio and the four-preset Sound Master EQ with BassWave.
• Best for workouts and sweat → One Plus Bullets. IP55 water and sweat resistance plus a skin-friendly silicone neckband.
• Best for staying inside the Samsung ecosystem → korllo Single Right Replacement. It integrates with the Buds 3 Pro case, left bud, ANC and 360° spatial audio.
• Best for call clarity in noisy places → One Plus Bullets. AI call noise cancellation is a named feature, and the 21-hour talk-time figure suits heavy callers.
• Best for warranty peace of mind → korllo Single Right Replacement. A 1-year limited warranty on the part, versus no manufacturer warranty on the Bullets.
• Best for a buyer who owns nothing yet → One Plus Bullets. You cannot start with a single replacement bud; you need a complete headset first.
In my opinion, the answer depends entirely on which problem you actually have. If you are starting from zero and want one headset that handles music, calls, workouts and long days away from a charger, I would buy the One Plus Bullets — the 36-hour battery, 27-hours-from-10-minutes charging, IP55 rating and bass-forward 12.4 mm drivers make it the more complete product for everyday use. If you already own Galaxy Buds 3 Pro and only the right earbud is gone, I would buy the korllo Single Right Replacement instead, because it restores the set you already have at the level of a single component rather than pushing you into a whole new purchase.
FAQ
No. According to the product information, it is compatible only with the Samsung Galaxy Buds 3 Pro (AI version, model SM-R630). It is specifically not compatible with the standard Galaxy Buds 3, so check your model before ordering.
The listed figures are up to 36 hours of continuous playback and 21 hours of talk time. A 10-minute charge is stated to provide 27 hours of playback, and a full charge takes about 30 minutes.
Yes. It is described as carrying the same AI chip and speaker unit as the original, with support for 360° spatial audio, ANC noise cancellation and ambient sound mode, and it pairs with your existing left earbud and charging case.
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