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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 8 min read · Independent comparison
• Hulaed Earbuds — biggest strength: a claimed 53 hours of total playtime plus a dual LED display that shows the battery level of both the buds and the case, so you always know where you stand.
• Hulaed Earbuds — biggest trade-off: these are in-ear buds with sound isolation, so you block out the world — great for focus, less great when you need to hear what's happening around you.
• GREYOLK Open Ear Headphones — biggest strength: an open-ear hook design that leaves your ear canal free, paired with a 270° rotatable boom mic and AI noise-cancelling for calls.
• GREYOLK Open Ear Headphones — biggest trade-off: battery life is measured in a single workday (10 hours), not a week, and there's no charging case to top up from.
• Who each pick is for: pick Hulaed if you want immersive sound, long gym sessions and long trips between charges; pick GREYOLK if you live on calls, drive, commute or run near traffic and want to stay aware.
The Hulaed Earbuds are built around one idea: keep going without stopping to charge. The headline figure is 53 hours of battery life, and the dual LED digital display on the case shows the remaining power of both the earbuds and the charging box. That combination is genuinely useful if you're the kind of person who forgets to plug things in — you can see the state of the charge before you leave the house instead of discovering it's dead on the train.
On sound, Hulaed uses 14.2mm dynamic drivers, which is a fairly large driver for a set of sport buds. Bigger drivers generally move more air, which is why the company talks about low-frequency depth and balanced mids. I read that as a tuning aimed at pop, hip-hop and workout playlists rather than analytical listening. The 16-ohm impedance is low, which means almost any phone or tablet can drive them easily. Bluetooth 5.4 handles the connection, and the pitch is faster pairing, a more stable link and low latency — worth noting if you game or watch video, because latency is what causes lip-sync lag.
For calls, there's an ENC noise-cancelling mic that Hulaed says filters out more than 80% of outside noise. That's a microphone-side technology: it cleans up what the person on the other end hears, not what you hear. Don't confuse it with active noise cancellation — the noise control listed here is sound isolation, which comes from the in-ear seal itself.
Buy Hulaed if you train hard, travel long distances, hate charging cables, and want your music to shut the world out. Skip it if you need to hear traffic, announcements or a colleague tapping you on the shoulder — in-ear isolation works against you there.
GREYOLK Open Ear Headphones: Who It's For
GREYOLK takes the opposite approach. The V3 is an open-ear headset, which means nothing goes inside your ear canal. Instead, the earpiece rests against the outside of your ear on an oval hook, and the driver sends sound toward you while leaving your ear open. GREYOLK describes it as air conduction in the title and lists the driver type as bone conduction in the spec sheet — either way, the practical outcome is the same: you hear your audio and your surroundings at the same time. For cyclists, runners on shared paths, drivers and anyone working in an office where people walk up behind them, that awareness is the whole point.
The call setup is where GREYOLK makes its case. There's a 270° rotatable microphone boom you can swing toward your mouth, plus AI noise cancellation on the mic. A boom mic sitting near your mouth generally picks up less room noise than a mic buried in a bud, and the rotatable arm means you can position it where it works on your face. The V3 supports Bluetooth 5.4 with a stated range of 10 meters, so you can leave the phone on a desk and walk to the kitchen mid-call.
Weight is the other headline: 32 grams total. That's light enough that GREYOLK markets it for all-day wear, and the ABS body is described as skin-friendly and smooth. Because the hook grips the ear rather than sealing it, there's no pressure build-up inside the canal — a real difference if in-ear tips normally make your ears ache after an hour. The trade-off of an open design is bass. Without a seal, low frequencies escape, so don't expect the thump you'd get from a sealed in-ear bud. The 15mm driver and 20Hz–20kHz range are respectable, and the 86dB sensitivity with 8-ohm impedance means it's easy to drive, but physics is physics.
Battery is 10 hours of music (the FAQ lists 8 hours talk time), with a 2-hour charge over USB-C. Controls run through a multi-function button for calls and playback, and you can pair to two devices and switch with a button press. Warranty is listed at two years.
Buy GREYOLK if you're on calls most of the day, drive or commute, run near traffic, or your ears reject in-ear tips. Skip it if you want deep bass, total immersion, or more than a single day of battery.
Side-by-Side: Which Should You Choose?
• Best for staying aware of your surroundings → GREYOLK Open Ear Headphones. The open-ear design is the reason it exists.
• Best for calls in noisy places → GREYOLK Open Ear Headphones. A rotatable boom mic plus AI noise cancellation beats a bud-mounted ENC mic for voice pickup.
• Best for bass and immersion → Hulaed Earbuds. In-ear isolation plus 14.2mm drivers will deliver low end the open design can't.
• Best for all-day comfort if your ears are sensitive → GREYOLK Open Ear Headphones. 32g and no ear-canal seal.
• Best for gaming and video → Hulaed Earbuds. Bluetooth 5.4 low-latency is called out specifically, and isolation helps you focus.
• Best for workouts where you must hear traffic → GREYOLK Open Ear Headphones. The hook holds firm without blocking sound.
• Best for charging convenience → Hulaed Earbuds. The case carries the charge and the LED display tells you how much is left.
If I had to pick one for myself, I'd take the GREYOLK Open Ear Headphones. In my opinion, the open-ear format plus a boom mic is the more useful combination for the way most people actually use headphones — calls, commutes, workouts, being present in the room. Ten hours covers a full workday and it's light enough to forget you're wearing it. That said, if your priority is music that shuts everything out and you refuse to charge more than once a week, the Hulaed Earbuds are the better fit. Two different jobs, two different answers. Check the current price on Amazon before you commit, since both sit in the budget end of the market and the gap between them may decide it for you.
Both are built for movement — Hulaed uses a hook-shaped earpiece to stay put, GREYOLK hangs on the ear at just 32g. The real difference is awareness: GREYOLK leaves your ear canal open so you hear cars and other runners, while Hulaed's in-ear seal blocks them out. If you run on roads, I'd lean GREYOLK.
That's the listed battery average life, and it's the total figure you get from the earbuds plus the charging case — not 53 hours from a single charge. The dual LED display shows the power level of each, so you can track it yourself. By comparison, GREYOLK lists 10 hours of music and 8 hours of talk time on one charge.
GREYOLK, in my opinion. It pairs a 270° rotatable boom microphone with AI noise cancellation, and a boom mic near your mouth generally captures your voice more cleanly than an in-ear mic. Hulaed counters with an ENC mic that filters outside noise on your end, which is solid for short calls but less ideal for long meetings. Note that GREYOLK's multi-function button can't answer calls on desk phones or landlines.
Yes, but read the label carefully. The product information lists active noise cancellation, and the microphone uses AI noise reduction to cut background sound on calls. What it does not do is seal your ear canal, so you'll still hear the room around you — that's the open-ear trade-off, and for a lot of buyers it's the feature, not the flaw. Hulaed takes the other route, using in-ear sound isolation to physically block outside noise.
In the low end, yes — that's the honest answer. Without a seal, bass escapes before it reaches your ear. Hulaed's 14.2mm dynamic drivers and in-ear fit are better suited to deep, punchy sound, while GREYOLK's 15mm driver focuses on clarity and stereo separation for voice and casual listening. Pick based on which of those you care about more.
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