We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-06 · 7 min read · Independent comparison
If you want dependable wired on-ear sound for movies, calls and long desk sessions, choose Audio-Technica ATH-S120C-BK; if you need fuss-free wireless open-ear buds that stay put while you're jogging, choose Micool Open Ear Headphones. One is a USB-C plug-in pair you never have to charge. The other is a Bluetooth sport set with a charging case and hours of battery to spare.
• Audio-Technica ATH-S120C-BK — biggest strength: wired USB-C audio with an in-line mic and remote, so play/pause, track skip, volume and calls are all at your fingertips, plus a lightweight on-ear build that folds flat.
• Audio-Technica ATH-S120C-BK — biggest trade-off: it's wired and there's no noise cancellation, so you're tethered to your device and still hear the room around you.
• Micool Open Ear Headphones — biggest strength: Bluetooth 5.4 wireless freedom with up to 18 hours of playback per charge, a charging case that extends total listening time, and four microphones with adaptive noise reduction for calls.
• Micool Open Ear Headphones — biggest trade-off: open-ear design means less isolation and less bass slam than a sealed on-ear cup, and the warranty period is shorter than Audio-Technica's.
• Pick Audio-Technica ATH-S120C-BK if you want simple, plug-and-play listening on a phone, tablet or laptop with a USB-C port.
• Pick Micool Open Ear Headphones if you want wireless sport audio that stays comfortable through runs, workouts and commutes.
The ATH-S120C-BK is a wired, on-ear headphone that connects over USB-C. That single design choice shapes everything about it. There's no battery to manage, no pairing dance, no charging case to lose. You plug into a USB-C port on a phone, tablet, computer or laptop and you're listening. Audio-Technica has been building audio gear since 1962, and this model reads as a practical everyday pair rather than a statement piece.
The specs back up the "everyday" angle. A 35-ohm impedance and 103 dB sensitivity suggest it's easy to drive straight from a phone or laptop headphone output. The dynamic driver covers a 20 Hz to 20,000 Hz range, which is the standard full-audible span. The in-line remote handles play/pause, track skipping, volume and call answering, so you rarely need to touch your device. The housings fold flat, and at 111 g the whole thing stays light enough to wear for a long movie or a full workday. It's compatible with both iOS and Android devices, and it ships with a 2-year warranty.
Who should skip it: if you want to move freely — jogging, gym work, walking around the house — a cable is a dealbreaker. And if you need active noise cancellation, this model doesn't offer it. There's also a Bluetooth entry in the spec sheet, which is worth noting as a curiosity, but the core identity here is wired USB-C.
Micool Open Ear Headphones: Who It's For
The Micool set takes the opposite approach. It's fully wireless over Bluetooth 5.4, and it's built around the open-ear concept: the earpiece sits against the ear rather than sealing over it. The 36 mm housings are deliberately small and light, and the earhook plus sponge earcup design is meant to avoid pressing on your ears. That's the whole point of an open-ear fit — you keep awareness of traffic, footsteps and conversation while music plays.
Battery is the headline. A single full charge gives up to 18 hours of music, and the charging case pushes total listening time to as much as 52 hours. The case charges over USB-C and has a four-stage indicator light, each stage covering roughly a quarter of the remaining capacity, so you can see how much charge is left at a glance.
On the audio side, Micool lists 27 mm speakers with a 16-ohm impedance, a dynamic driver and a 20 Hz to 20,000 Hz range. Adaptive noise reduction covers both active and call noise, and the four microphones are aimed at making voices clearer on calls. Controls are push-button on each earpiece.
Who should buy it: runners, gym-goers and cyclists who don't want a cable snagging and who value hearing their surroundings. The long battery and case make it a natural travel and commute companion too.
Who should skip it: if you want deep isolation or heavy bass, an open-ear fit won't deliver it the way a sealed on-ear cup will. The warranty is also 6 months, notably shorter than Audio-Technica's 2 years, and the stated age range is adult.
• Best for jogging → Micool Open Ear Headphones. Wireless, earhook-secured and open-ear, so nothing tangles and you stay aware of your surroundings.
• Best for battery life → Micool Open Ear Headphones. Up to 18 hours per charge and up to 52 hours total with the case versus a wired set that draws nothing.
• Best for zero-hassle setup → Audio-Technica ATH-S120C-BK. Plug into USB-C and play — no pairing, no charging.
• Best for calls on the move → Micool Open Ear Headphones. Four microphones with adaptive noise reduction are built for voice pickup.
• Best for desk, laptop and tablet use → Audio-Technica ATH-S120C-BK. The in-line remote and fold-flat design suit stationary sessions.
• Best for hearing your environment → Micool Open Ear Headphones. The open-ear shape intentionally lets outside sound in.
• Best for long-wear comfort without charging → Audio-Technica ATH-S120C-BK. At 111 g with a lightweight, compact build, it's made for extended listening.
• Best for wireless freedom while keeping a mic → Micool Open Ear Headphones. Bluetooth 5.4 keeps the connection stable with no cable in the way.
If I'm buying for jogging, I'd pick the Micool Open Ear Headphones. For running, wireless beats wired every time — no cable swing, no snagging, and the open-ear fit keeps you aware of cars and other people. The 18-hour battery and charging case mean you're not hunting for a charger after every session, and the four-mic setup handles calls on the move.
I'd choose the Audio-Technica ATH-S120C-BK instead if my listening happens mostly at a desk or on a couch — plug in, hit play, done. In my opinion, the deciding question is simply whether you move while you listen. If you do, go Micool. If you don't, go Audio-Technica.
how to clean on ear headphones
Wipe the earpads and headband with a soft, slightly damp cloth, and use a dry cloth on the plastic housings. For the Audio-Technica ATH-S120C-BK, keep moisture away from the USB-C connector and the in-line remote. For the Micool set, wipe the sponge earcups gently and let them air-dry before returning them to the charging case.
how to fit on ear headphones
On-ear models rest against the outside of your ear rather than around it. Adjust the headband so the pads sit flat and lightly against each ear without pressing hard. The Audio-Technica ATH-S120C-BK is the classic on-ear fit; the Micool set uses an earhook plus sponge earcup that hooks over the ear instead.
how to open ear headphones
"Open ear" describes headphones that don't seal or block your ear canal — they sit near or against the ear and let ambient sound through. On the Micool set, you hook the earpiece over your ear so the small 36 mm housing rests outside the canal. That's why you can hear traffic and conversation while music plays.
how to ear headphones
If you mean how to wear them, hook or place each earpiece so it sits comfortably against your ear, then adjust until it feels stable. For the Micool set, the earhook should sit behind your ear with the sponge earcup resting lightly. For the Audio-Technica, extend the headband and center each pad over your ear. Neither should feel like it's clamping down.
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