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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a single on-ear headset for all-day office, call-center and webinar work, choose NUBWO USB Headset; if you need a pack of ten USB-C in-ear earphones to hand out to students, staff or event guests, choose Bulktech 10.
• NUBWO USB Headset — biggest strength: a proper on-ear headset with a unidirectional noise-cancelling boom mic, in-line volume control and both 3.5mm and USB-A connectivity, so it fits almost any desk setup.
• NUBWO USB Headset — biggest trade-off: it is one headset, not a set, and it is built for a desk rather than for moving around.
• Bulktech 10 — biggest strength: ten individually wrapped USB-C in-ear earphones with mics in one box, which is exactly what you want when you are equipping a group rather than yourself.
• Bulktech 10 — biggest trade-off: no volume control, no noise-cancelling, no boom mic, and a USB-C-only plug that will not fit older USB-A-only machines without an adapter.
• Who each pick is for: NUBWO for the individual knowledge worker, agent or teacher who lives on calls; Bulktech for schools, libraries, testing programs, gyms and businesses distributing audio gear in bulk.
The NUBWO HW02 is a wired, on-ear headset with a 40mm driver, 32ohm impedance, 103dB sensitivity and a 20Hz–20,000Hz frequency range. Those are the numbers of a headset tuned for speech intelligibility rather than bass-heavy listening, which makes sense given what it is: an office and call-center tool. The unidirectional microphone is the centrepiece here. A unidirectional pickup pattern focuses on the sound coming from in front of it and rejects more of what is happening around you, so your voice arrives at the other end of a Skype, Teams or webinar call with less room noise behind it. The detachable USB control adds an external volume control, and the headset also has in-line volume control on the cable.
Connectivity is the part I like most. You get a 3.5mm jack plus a USB sound card, and NUBWO states it works with USB-A devices as well as anything with a 3.5mm output, including PCs, Macs, Chromebooks, tablets, smartphones, MP3 players and gaming systems. That is unusual flexibility for a wired headset at this end of the market — plug the USB control into a desktop, or use the 3.5mm plug on a tablet or phone. The 1.5m cable is short enough to avoid tangling under a chair but is a real limitation if you like to stand up mid-call.
In my opinion this is the right buy for one person who needs one reliable headset: a remote worker on back-to-back calls, a call-center agent, a teacher running online classes, or anyone who wants to keep typing while talking. The plastic on-ear build is light, which matters over a full shift. Who should skip it? Anyone equipping a whole classroom or a group of test-takers — buying one headset at a time is the wrong tool for that job — and anyone who needs a USB-C plug specifically.
Bulktech 10 is a different product category wearing a similar label. It is a 10-pack of wired USB-C in-ear earphones, all black, individually wrapped. The fit is a shallow in-ear design with soft foam pads and no silicone tips, which is a deliberate comfort and hygiene choice: nothing pushes deep into the ear canal, so they stay tolerable over a long class period or a full day of travel, and they are easier to hand out and take back.
The spec sheet lines up with the NUBWO on paper — 32 ohm impedance, a dynamic driver, 20Hz–20,000Hz — but the practical differences are what matter. There is a built-in microphone and a single-button remote for call control, so you get hands-free calling, media playback and voice-assistant access. The noise control field is "None", so do not expect any noise cancelling. The cord is 4ft and tangle-free, and the plug is USB-C, which covers Chromebooks, Android phones, USB-C tablets and USB-C laptops.
The real feature is the count. Ten units, individually wrapped, means a school can issue a set for standardized testing, a library can lend them out, a call center can keep spares at every desk, a gym can stock them, and an events team can include them in delegate bags. The item weight of 0.23 kg is for the whole package, which tells you how light each pair is. Who should skip it? Anyone who wants one good headset for themselves — you would be buying nine pairs you do not need — and anyone whose machines only have USB-A ports and who does not want to deal with adapters. There is also no volume control on the earphone itself, so volume is handled at the source.
Side-by-Side: Which Should You Choose?
• Best for all-day calls and webinars → NUBWO USB Headset. On-ear fit, boom mic and in-line volume control are built for long sessions.
• Best for equipping a group → Bulktech 10. Ten individually wrapped units in one order beats buying singles ten times over.
• Best for hygiene and shared use → Bulktech 10. Individually wrapped with foam pads and a shallow fit, so units can be issued and returned without fuss.
• Best for mixed device compatibility → NUBWO USB Headset. 3.5mm plus USB-A covers desktops, Macs, Chromebooks, tablets, phones and consoles; Bulktech is USB-C only.
• Best for modern USB-C-only kit → Bulktech 10. If every machine in the room is a Chromebook, Android tablet or USB-C laptop, the plug matches without adapters.
• Best for portability → Bulktech 10. A small in-ear pair with a 4ft cord packs into a pocket; the NUBWO is a full on-ear headset with a 1.5m cable and a detachable USB control.
• Best for classroom testing and lending programs → Bulktech 10. The 10-pack format is made for exactly that.
• Best for a single buyer who wants one thing done well → NUBWO USB Headset. Fewer compromises for personal, desk-bound work.
If I were buying for myself — one desk, one headset, calls all day — I would take the NUBWO USB Headset. The on-ear design, unidirectional noise-cancelling boom mic, in-line volume control and dual 3.5mm/USB-A connectivity make it the more complete tool for individual work, and the 32ohm/103dB spec sheet is well suited to voice.
If I were outfitting a classroom, a testing lab, a call-center floor or an event, I would take Bulktech 10 without hesitation. Ten wrapped USB-C earphones with mics is a distribution product, and judging it as a personal headset misses the point. Check the current price on Amazon for both before you commit — the right answer depends on whether you are buying for one person or ten.
FAQ
Not directly. Bulktech 10 uses a USB-C plug and is listed as compatible with Chromebooks, Android phones, USB-C tablets and USB-C laptops. You would need an adapter for USB-A-only machines. The NUBWO headset covers both USB-A and 3.5mm out of the box.
Bulktech 10. It is a 10-pack of individually wrapped earphones designed for schools, libraries, testing and bulk distribution. The NUBWO is a single headset, so it is the wrong format for equipping a group.
Only the NUBWO, and only on the microphone side — the unidirectional noise-cancelling mic reduces background noise on your voice during calls. Bulktech 10 lists no noise control at all, so neither product cancels noise for the listener.
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