We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-29 · 7 min read · Independent comparison
If you want the newer wireless standard, open-ear comfort and a genuinely pocketable charging case, choose Niderson Open Ear Headphones; if you need the longer total battery life, three ear-tip sizes and a visible battery display, choose Kuizil Earbuds.
• Niderson's biggest strength: Bluetooth 6.0 plus a 45-hour total runtime in an ultra-thin 24.7mm case — and it's the one with a real open-ear, earhook build and air-conduction design.
• Niderson's biggest trade-off: Touch controls live across three tap zones, so there's a short learning curve before taps feel second nature.
• Kuizil's biggest strength: 50 hours of total playtime, 3 ear-tip sizes (S/M/L) for a more tailored fit, and a dual LED display that shows battery status at a glance.
• Kuizil's biggest trade-off: It's on Bluetooth 5.4 with a listed 30ft range, while the Niderson steps up to Bluetooth 6.0.
• Both share: ENC noise-canceling mics for calls, IP-rated water resistance, touch control and a 10-hour single-charge figure.
• Who each pick is for: Niderson for all-day open-ear wearers and commuters who want the thinnest case; Kuizil for workout-first users who want maximum runtime and fit options.
The Niderson L9 is built around the idea that you should never have to plug your ears to hear your music. It uses an ergonomic earhook that rests lightly on the ear without blocking the canal, and the open design means environmental sound stays audible while audio plays. That's the whole point of air conduction here: you hear your podcast and the traffic behind you at the same time.
Under the hood, the spec sheet is unusually specific. A 15mm dynamic driver handles the audio, and the built-in ENC mic is there to keep your voice clear on calls by cutting background noise. Battery is listed at 10 hours per charge, stretching to a 45-hour total with the case — and that case is the headline design choice, just 24.7mm thick, thin enough to slide into a tight jean pocket. The whole thing carries an IPX7 waterproof rating and pairs with essentially any Bluetooth device, iOS or Android.
Kuizil Earbuds: Who It's For
The Kuizil B01 takes the opposite approach: it wants to disappear into your workout. Flexible, soft ear hooks hold the buds in place, and the package includes three sizes of ear tips — small, medium and large — so you can actually dial in the fit instead of settling for whatever comes in the box. The IP7 rating covers sweat, rain and minor splashes, which is exactly the environment this product is designed for.
The battery story is the real differentiator. Kuizil lists about 10 hours per charge and a 50-hour total with the case, charged over Type-C. The case has a transparent cover with a dual LED display showing remaining battery and charging status — a small thing that becomes very useful when you're packing for a trip and don't want to guess. On the connection side, it runs Bluetooth 5.4 with auto-connection when you open the lid, a listed 30ft range, and low-latency performance for video. The 14.2mm double-layer diaphragm drivers are tuned for strong bass, clear mids and bright treble, and the built-in mics transmit your voice for calls. Touch controls sit on the upper part of each bud and cover play/pause, track skipping, volume, calls and the voice assistant.
So who is this for? Anyone whose headphones live in a gym bag. The ear-hook plus multi-size tip combination is the most secure-feeling setup here for running and cycling, and 50 hours of total runtime means you can go a long time between charges. Who should skip it? If you specifically want an open-ear, non-blocking design, this isn't that — despite the "Open Ear" ear placement listed in its specs, the ear tips and in-ear-style fit mean the canal is more involved than the Niderson's air-conduction approach. And if having the newest Bluetooth generation on paper matters to you, the 5.4 spec sits a step behind.
• Best for total battery life → Kuizil Earbuds. 50 hours with the case versus 45 on the Niderson.
• Best for the newest Bluetooth standard → Niderson Open Ear Headphones. Bluetooth 6.0 versus 5.4.
• Best for truly open, ear-canal-free listening → Niderson Open Ear Headphones. Air conduction and an earhook that doesn't block the canal.
• Best for secure workout fit with size options → Kuizil Earbuds. Three ear-tip sizes plus flexible ear hooks.
• Best for travel and tight pockets → Niderson Open Ear Headphones. A 24.7mm case that's about as thin as a credit card.
• Best for knowing your battery level at a glance → Kuizil Earbuds. The transparent case lid with a dual LED display.
• Best for call clarity in both cases → a tie. Both rely on ENC mic technology to isolate your voice from background noise.
• Best for water exposure → both are rated for it, but note the ratings differ: IPX7 on the Niderson versus IP7 on the Kuizil.
If I were buying for myself, I'd take the Niderson Open Ear Headphones. Here's my reasoning: the open-ear, air-conduction design is the more distinctive product, and if I'm wearing headphones for a full workday plus a run, not blocking my ear canal is the feature I'd actually feel. Bluetooth 6.0 and that 24.7mm case seal it for me. That said, I'd steer a friend who trains hard and hates fiddling with chargers toward the Kuizil Earbuds — 50 hours, three tip sizes and a battery display are genuinely better answers to that specific problem. Match the tool to the job.
how to use wireless headphones mic on pc
Pair the headphones to your PC over Bluetooth first, then open your sound settings and select the headset as both the output and input device. Both the Niderson and Kuizil buds have built-in ENC mics, so once the headset profile is active, apps like Zoom or Teams will pick up the mic automatically. If the mic doesn't appear, check that you selected the "headset" profile rather than the stereo "headphones" one.
how to use mic on wireless headphones
Just wear them and take the call — the microphone is built into the earpieces on both models here, and touch controls handle answer and end. The Niderson uses a 15mm driver with ENC noise cancellation tuned for voice capture, and the Kuizil transmits through its built-in mics with the same goal. No boom arm, no cable, nothing extra to plug in.
can you use bluetooth headphones as a mic
Yes, provided the headphones include a microphone — which both of these do. Bluetooth carries two profiles: a high-quality stereo mode for music and a headset mode that activates the mic and two-way audio for calls. Your device switches automatically when a call starts, which is why call audio can sound slightly different from music playback.
do all bluetooth headphones have a microphone
No. Bluetooth headphones without a mic exist, usually sold purely for listening. That's why it's worth checking the spec sheet before buying: both the Niderson Open Ear Headphones and the Kuizil Earbuds explicitly list ENC noise-canceling microphones, so calls and voice chat are covered on either one. If a listing doesn't mention a mic at all, assume it doesn't have one.
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