We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 6 min read · Independent comparison
If you want a rechargeable, open-ear Bluetooth headset built for all-day calls and meetings, choose Avantalk Avantree Lingo N21; if you need a large, low-cost stash of wired 3.5 mm earbuds to hand out across an office, classroom or event, choose Konohan 300.
• Avantalk Avantree Lingo N21 — biggest strength: open-ear hook design at just 29 g with a noise-cancelling mic, Bluetooth 5.3 and up to 15 hours per charge, plus a desk dock that doubles as a phone stand.
• Avantalk Avantree Lingo N21 — biggest trade-off: it is a single premium headset for one user, it has no 3.5 mm jack, and the dock's phone stand does not charge phones.
• Konohan 300 — biggest strength: 300 individually wrapped pairs of wired in-ear earbuds in one pack, made of TPE and silicone, ready for mass hand-out and quick replacement.
• Konohan 300 — biggest trade-off: wired only, no microphone specs, no battery, and it needs a 3.5 mm jack device to work at all.
• Pick Avantalk Avantree Lingo N21 if you are one person who lives on Zoom or Teams calls and wants a comfortable wireless headset.
• Pick Konohan 300 if you are equipping a group — a classroom, a testing room, a fleet of shared workstations — and need volume rather than features.
The Lingo N21 is a single-user wireless office headset, and its whole design story is comfort over long stretches. The ear-hook shape sits on the ear rather than inside it, so nothing plugs the canal and nothing presses on it, and at 29 g the headset stays light enough that a full day of back-to-back meetings is the use case it was clearly drawn for. Bluetooth 5.3 with a 10 m / 30 ft range covers the usual desk-to-kitchen walk, and the supported profiles — A2DP, AVRCP, HFP and HSP — mean it handles both call audio and media playback.
The microphone is the other half of the pitch. A noise-cancelling mic is there to reduce background noise on calls, which is exactly what you want on Zoom, Teams or a softphone platform on a PC. Battery life is rated up to 15 hours per charge with a 2-hour charge time, so a normal workday fits inside one charge. The charging dock is the detail that makes it feel like office gear rather than a consumer gadget: you drop the headset on the contact-charging dock, it stays topped up and tidy, and the dock includes a phone stand for video calls and desk organization — worth noting the stand is a stand only and does not charge your phone.
Who should buy it: remote workers, office professionals and anyone whose calendar is mostly calls. Who should skip it: you if you need wired input, a 3.5 mm jack, or multiple headsets for several people — this is one headset for one person, and the controls are touch-based, which some people dislike on a call headset.
The Konohan 300 is not really a headset you compare one-to-one with a Bluetooth office headset — it is a bulk supply product, and it should be judged that way. You get 300 packs of black wired in-ear earphones, each packet individually wrapped. That packaging choice is the point: individual wrapping means you can hand them out, store them, and replace a failed pair without digging through a tangled pile. The build leans on TPE for the body and silicone for the ear tips, which the spec sheet frames as resistant to deforming, tearing and breaking, and reusable over time.
Compatibility is deliberately plain: a 3.5 mm jack, wired. That covers most phones, computers, laptops and fitness equipment with a headphone port, and the sheet calls out school testing as a natural fit. Sound quality is described as clear without harshness, and the fit is described as neither too tight nor too loose — reasonable expectations for a basic in-ear bud, not audiophile claims.
Who should buy it: teachers and school staff, test administrators, offices with shared or loaner workstations, gyms, event organizers, and anyone who needs rewards or giveaways for kids, teens or adults. Who should skip it: you if you want wireless freedom, a call microphone tuned for meetings, a charging dock, or a headset you will keep for years — a 6.6-pound box of 300 pairs is inventory, not a personal audio upgrade.
• Best for hands-free calls and meetings → Avantalk Avantree Lingo N21. Noise-cancelling mic, Bluetooth 5.3, and the profile support that call platforms rely on.
• Best for all-day wear comfort → Avantalk Avantree Lingo N21. Open-ear hook, 29 g, nothing inserted into the ear canal.
• Best for battery life → Avantalk Avantree Lingo N21. Up to 15 hours per charge, 2-hour charge time, and a dock that keeps it ready on your desk.
• Best for desk organization → Avantalk Avantree Lingo N21. The charging dock stores the headset and holds your phone upright for video calls (remember: it does not charge the phone).
• Best for outfitting a group → Konohan 300. 300 individually wrapped pairs means everyone gets their own, with spares on hand.
• Best for shared, low-touch equipment → Konohan 300. Wired 3.5 mm buds are the simplest thing to hand out, collect and replace in a classroom or testing room.
• Best for device flexibility → it depends on your port. Konohan 300 works with anything that has a 3.5 mm jack; the Lingo N21 needs Bluetooth and has no jack at all.
• Best for a durable long-term personal setup → Avantalk Avantree Lingo N21. A 24-month warranty, plus support through chat, email, phone, online clinic, video tutorials and FAQ.
If I were buying for myself — one desk, one calendar full of calls — I would buy the Avantalk Avantree Lingo N21. In my opinion, the combination of an open-ear 29 g design, a noise-cancelling mic, up to 15 hours per charge and a dock that stores the headset and holds my phone is exactly what a wireless office headset should be, and the 24-month warranty backs it up. I would only choose the Konohan 300 if my job were distributing earbuds to other people rather than wearing one myself. Check the current price on Amazon before you decide, then match it to your situation: one user, or three hundred.
They solve different problems. The Lingo N21 is a wireless Bluetooth headset with a noise-cancelling mic, a charging dock and up to 15 hours of battery for one user. The Konohan 300 is 300 wired 3.5 mm earbuds for group distribution. If you need calls and meetings, the Lingo N21 is the right category; if you need to equip a room, the Konohan 300 is.
Yes — it uses Bluetooth with the A2DP, AVRCP, HFP and HSP profiles, which cover call and media audio on PC and computer platforms, and the spec sheet lists Zoom and Teams use directly. It has no 3.5 mm jack, so your device needs Bluetooth.
Only if your device has a 3.5 mm jack and you are fine with a wired connection. The spec sheet does not list a microphone, so I would not buy it expecting meeting-grade call audio — it is best treated as general listening, testing and hand-out earbuds.
Different kinds of longevity. The Lingo N21 is rated up to 15 hours per charge and carries a 24-month warranty, so it is built to be kept and maintained. The Konohan 300 is built to be replaced in bulk — its TPE and silicone construction is described as reusable and resistant to tearing, but with 300 pairs in the box, longevity is a matter of swapping in a new pair.
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See also: Delton Headset vs NANSLS Headset: Wireless Office Headphones, Skullcandy Hesh ANC vs Godyse Earbuds: Wireless Noise, Galirity Headset vs AILIHEN I35: Wireless Foldable