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Updated: 2026-09-24 · 6 min read · Independent comparison
• OSSZIT's biggest strength: It comes as a 10-pack of on-ear wired USB Type C headphones in mixed colors — a practical classroom or multi-kid solution rather than a single personal pair.
• OSSZIT's biggest trade-off: No microphone, no inline remote, no noise control, and on-ear (not in-ear) fit — plus 10 identical pairs is overkill if you only need one.
• ZRTXBA's biggest strength: A 2-pack of in-ear USB C earbuds with a built-in microphone, remote controls, and sound-isolating design — built for calls, voice, and focused listening.
• ZRTXBA's biggest trade-off: Only two earbuds, white only, and in-ear fit isn't for everyone; no bulk quantity for groups.
• Pick OSSZIT if you're equipping a classroom, school, or several kids/students and want on-ear Type C headphones in quantity.
• Pick ZRTXBA if you want a couple of personal in-ear earbuds with a mic and remote for phone calls and daily use.
OSSZIT's whole identity is the word in its title: bulk. This is a 10-pack of wired USB Type C on-ear headphones in mixed colors, aimed squarely at classrooms, schools, and families with multiple kids. The USB Type C jack means they're built for modern devices that have dropped the old 3.5mm port, and the "kid, teen, adult" age range tells you the intent is broad, shared, everyday use rather than one person's premium listening setup.
The design choices make sense for that audience. On-ear cups are generally sturdier and harder to lose than tiny in-ear buds, which matters when a lot of different students are handling the same gear. Mixed colors are a genuinely useful detail in a classroom — it gives you a simple way to tell sets apart and hand them out. The 32 ohm impedance is a normal, easy-to-drive figure, so you don't need anything special to power them. And a 1-year warranty covers the first stretch of heavy use, which is about what you'd expect for shared school equipment.
ZRTXBA USB C Headphones: Who It's For
ZRTXBA goes the other direction: smaller, more personal, and more feature-packed per unit. This is a 2-pack of wired in-ear USB C earbuds with a built-in microphone and remote controls, and the brand explicitly lists compatibility with recent iPhone models (17/16/15), iPad Pro/Air, and Galaxy S25/S24/S23 Ultra. In other words, it's positioned for current-generation USB C phones and tablets, not legacy gear.
The feature list is where it separates from OSSZIT. There's a microphone, so these work for calls, voice notes, and video meetings. There's an inline remote, so you can control playback and calls without pulling out your phone. And the noise control is listed as sound isolation — that's the passive kind you get from an in-ear seal, not active noise cancellation, but it does help block out surroundings while you listen. The in-ear shape is the classic earbud form factor, which many people find easier to carry and tuck into a pocket than on-ear cups. It's white, it's a 2-pack, the intended age range is adult, and there's a 2-year manufacturer warranty — a longer coverage window than OSSZIT's.
Who should buy it: an individual or a couple who want USB C earbuds with a mic and remote for phone calls, commuting, and daily listening on a modern USB C phone or tablet. Who should skip it: anyone buying for a classroom or a group of kids (two units is nowhere near enough), anyone who dislikes in-ear fit, and anyone who needs on-ear cups specifically. It's also worth noting the sound isolation is purely from the seal — there's no active noise cancellation on the spec sheet.
• Best for classroom or group use → OSSZIT USB C Headphones. A 10-pack of on-ear Type C headphones in mixed colors is purpose-built for sharing among students and kids.
• Best for calls and voice → ZRTXBA USB C Headphones. It has a built-in microphone; OSSZIT does not.
• Best for playback control without your phone → ZRTXBA USB C Headphones. Inline remote controls; OSSZIT has none.
• Best for quieting your surroundings → ZRTXBA USB C Headphones. Its in-ear design provides sound isolation, whereas OSSZIT lists no noise control.
• Best for younger or shared-device durability → OSSZIT USB C Headphones. On-ear cups in mixed colors suit kids, teens, and handing gear around a room.
• Best for portability → ZRTXBA USB C Headphones. In-ear earbuds pack down far smaller than on-ear cups.
• Best for a single personal pair → ZRTXBA USB C Headphones. Two earbuds is a realistic personal quantity; ten on-ear headphones is not.
• Best for longer warranty coverage → ZRTXBA USB C Headphones. A 2-year manufacturer warranty versus OSSZIT's 1 year.
In my opinion, most individual shoppers should choose ZRTXBA USB C Headphones. The microphone, inline remote, and in-ear sound isolation make it the more complete everyday pair for calls, commuting, and listening on a modern USB C phone or tablet — and the 2-year warranty is a reassuring detail. I'd only steer you to OSSZIT USB C Headphones if your actual need is quantity: a classroom, a school, or several kids who each need an on-ear pair, where a 10-pack of mixed-color Type C headphones is exactly the right shape of product. Decide which of those two situations is really yours, then check the current price on Amazon before you commit.
Plug the USB C connector into your Mac's USB C port. Because OSSZIT and ZRTXBA are both wired USB Type C headphones, they connect directly without an adapter, and the Mac should route audio to them automatically. On ZRTXBA you'd also have the inline remote for playback and call control.
Connect the USB C plug to your phone's USB C port. Wired Type C headphones like these work without a dongle on USB C Android phones, including the Galaxy S25/S24/S23 Ultra that ZRTXBA lists as compatible. The phone should switch audio output to the headphones on its own.
The PS5 has a USB C port, so you can plug a wired USB C headphone in and select it as your audio output in the console's settings. For voice chat, note that ZRTXBA has a built-in microphone while OSSZIT does not, so it's the better fit if you need to talk while you play.
ZRTXBA USB C Headphones have a built-in microphone and remote controls. OSSZIT USB C Headphones do not list a microphone, a remote, or any noise control — they're a listen-only on-ear design aimed at bulk classroom use.
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