How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-21 · 7 min read · Independent comparison
• Wantek Headset — biggest strength: A proper on-ear work headset with a 40mm dynamic driver, a boom-style mic, a busy light, physical call/mute buttons, Bluetooth 5.3 plus a USB A/C dongle, and up to 45 hours of battery life.
• Wantek Headset — biggest trade-off: It's a full-size on-ear headset at 190g. That's fine at a desk, but it's not something you'd wear lying on your side in bed.
• Costnzo Sleep Earbuds — biggest strength: A curved, non-in-ear design made for side sleepers, with a dedicated Sleep Mode that auto-shuts down after 1/2/3 hours and then locks the buttons so you don't fumble them at 3 a.m.
• Costnzo Sleep Earbuds — biggest trade-off: 5 hours per earbud on a single charge (24 hours with the case). That's a night, not a workweek.
• Buy Wantek if you take calls all day on a PC, laptop or phone and want one headset for meetings and music.
• Buy Costnzo if you want to fall asleep to audio without jamming something into your ear canal.
The Wantek Headset is unapologetically a work headset. Everything in the spec sheet points at the desk: a built-in microphone tuned to pick up your voice clearly while still letting a little ambient sound through, which matters in a home office or an open-plan space where you don't want to be totally sealed off from the room. The 40mm dynamic driver, 32 ohm impedance, 121 dB sensitivity and 20 kHz frequency response are the numbers of a headset built for clear speech and balanced, low-distortion sound over long sessions rather than bass-heavy casual listening.
Connectivity is the part I'd actually buy it for. Bluetooth 5.3 gives you a stable, low-latency link to a PC, laptop, TV or phone, and the included USB A/C dongle is the real workhorse here — plug it in and you've got a dedicated wireless path for calls and virtual meetings without fighting your computer's Bluetooth stack. There's a 10-metre wireless range, so you can walk to the kitchen mid-call. On the headset itself you get physical buttons for power, volume and mute, plus a call control button and an integrated busy light — the small red/green cue that tells the room (or your family) you're on a call. That's a genuinely useful detail if you work from home.
Comfort is handled with soft faux-leather ear cushions, an adjustable headband and a lightweight on-ear design, and it charges in about 2 hours for up to 45 hours of average use. That's roughly a workweek of calls between charges. It's finished in Ultra Black with an ABS/aluminium build, and it ships with a storage bag, USB charge cable, dongle and manual.
Who should buy it: remote workers, call-centre and office staff, students on long online sessions, and anyone who wants one headset to handle Zoom, Teams, phone calls and background music. Who should skip it: side sleepers, runners, and anyone who wants something invisible in their ear. A 190g on-ear headset is not a bedtime product, and Wantek doesn't pretend otherwise.
The Costnzo Sleep Earbuds are built around one very specific problem: you want to fall asleep listening to something, and normal earbuds make that miserable. Their answer is a curved, low-profile, non-in-ear design that sits outside the ear canal instead of inside it. No pressure, no itching, no "my ears hurt by 2 a.m." feeling, and — importantly for side sleepers — no bud getting driven into your head when you roll onto your side. If you've ever woken up because an earbud shifted, this is the design brief that fixes it.
The Sleep Mode is the smartest thing here. Four taps on either earbud switches between Sleep Mode and normal Music Mode. Inside Sleep Mode, a single tap within 10 seconds lets you set an auto-shutdown at 1, 2 or 3 hours — default 1 hour — and after that all buttons lock so you can't accidentally trigger anything while you're unconscious. Four taps takes you back to music mode. Costnzo also states there are no low-battery beeps to wake you, which is exactly the kind of small annoyance that ruins a night.
Audio and connectivity are respectable for the category: 8mm dynamic drivers with 16 ohm impedance, active noise cancellation, touch controls for calls, tracks and voice assistant, and a call noise-cancelling microphone. Bluetooth 5.4 is the newer standard here, with anti-interference tech for a steadier link and lower power draw, and it plays nicely with iPhones, Androids, Windows, PS4 and Xbox. Battery is 5 hours per earbud, extended to 24 hours of music and 180 hours of talk time via the charging case, with a dual LED power display and USB-C charging.
Who should buy it: side sleepers, light sleepers who want audio all night, people whose ear canals get sore from regular buds, and anyone who wants a discreet pair for podcasts, audiobooks or white noise in bed. Who should skip it: anyone who needs a full workday of battery in one go, or who wants a boom mic and a busy light for professional calls. That's not what this is.
• Best for work calls and meetings → Wantek Headset. Boom-style mic, mute button, call control button and a busy indicator light are all built for exactly this.
• Best for sleeping on your side → Costnzo Sleep Earbuds. The curved non-in-ear shape is the entire reason this product exists.
• Best battery life → Wantek Headset. Up to 45 hours of average use on a 2-hour charge versus 5 hours per Costnzo earbud (24 hours with the case).
• Best for wearing in bed, all night → Costnzo Sleep Earbuds. Sleep Mode auto-shutdown and button lock are night-specific features the Wantek simply doesn't have.
• Best for PC and laptop connectivity → Wantek Headset. Bluetooth 5.3 plus a bundled USB A/C dongle gives you a reliable dedicated wireless route for a computer.
• Best for the newest Bluetooth standard → Costnzo Sleep Earbuds. Bluetooth 5.4 with anti-interference tech, versus 5.3 on the Wantek.
• Best for ear comfort over long sessions → Depends on the session. Wantek for hours at a desk (soft cushions, adjustable headband); Costnzo for hours in bed (nothing inside the ear canal).
• Best for gaming and media on multiple devices → Costnzo Sleep Earbuds. It lists PS4, Xbox, Windows, iPhone and Android compatibility with low-latency performance, though the Wantek's dongle makes it a better fit for desktop work.
If I had to pick one, I'd buy the Wantek Headset. In my opinion it's the more useful product for most people, because it solves a problem you have every weekday — clear calls, a real mute button, a busy light and a dongle that just works with a computer — and it backs that up with up to 45 hours of battery. The Costnzo Sleep Earbuds are genuinely clever, and if you're a side sleeper who wants music until you drift off, nothing in the Wantek's spec sheet can replace them. But that's a narrower job. Buy the Wantek for work; buy the Costnzo for bed. Check the current price on Amazon before you commit, since that's the one thing these specs can't tell you.
FAQ
I wouldn't recommend it. It's a 190g on-ear headset with a headband and ear cushions, designed for desk and study use. The Costnzo's non-in-ear curved shape and Sleep Mode exist precisely because a full headset isn't a sleep product.
The Wantek, by a wide margin: up to 45 hours of average use after a 2-hour charge. The Costnzo gives 5 hours per earbud, extended to 24 hours of music and 180 hours of talk time with the charging case. For a full workweek, the Wantek wins; for one night's playback, both are fine.
They connect over Bluetooth 5.4 and are listed as compatible with Windows, so they'll pair with a computer. But there's no dongle and no boom mic, so for all-day meetings I'd still point you to the Wantek Headset.
In my opinion, the Wantek Headset is the better single-pair choice for most buyers, because work calls happen more often than side-sleeping audio sessions. If sleep is your main goal, the Costnzo is the one to get — just accept the 5-hour per-earbud playback.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.