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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want the earbuds I'd trust most for call clarity on a noisy street, choose HARMONY TWENTY-TWO HTT-21; if you need the longest single-charge playtime and real-time translation built in, choose AOSRAU Earbuds.
• HARMONY TWENTY-TWO HTT-21 — biggest strength: A 4-mic ENC array plus Bluetooth 5.4 with a rated 45 ms latency, which is the kind of spec you want when voice chat and lip-sync actually matter.
• HARMONY TWENTY-TWO HTT-21 — biggest trade-off: 6 hours per charge and 13 mm drivers, which trails the AOSRAU on raw playtime and driver size.
• AOSRAU Earbuds — biggest strength: 9 hours on a single charge, a 14.2 mm driver, IP7 waterproofing, and 14-language real-time translation through the companion app.
• AOSRAU Earbuds — biggest trade-off: It leans harder on app-based features and a broader spec sheet, and the ENC claim (90% of background noise) is the manufacturer's figure, not something I can verify.
• Who each is for: Call-heavy users who want the cleanest mic setup should look at the HTT-21; travelers, gym-goers and anyone who talks across languages should look at the AOSRAU.
The HTT-21 is built around one idea: making your voice sound right on the other end of a call. It uses ENC with four microphones, which is a different job from ANC. ENC works on the sound your mics pick up so the person you're talking to hears you instead of the café, the train carriage or the wind. That distinction matters, and the HTT-21's own documentation is unusually honest about it — ENC does not quiet the noise you hear while listening to music. If you want the world around you to go silent while you listen, this is not that product.
Where it earns its place is the everyday call grind. Bluetooth 5.4 with a 45 ms latency rating means audio and video stay lined up closely enough that you won't notice a lag while streaming or gaming, and a 10-meter range is enough to leave your phone on a desk and pace a room. The fast-charge spec is genuinely useful: 10 minutes in the case buys about 100 minutes of playback, which is the difference between a dead commute and a working one. Full charge takes 45 minutes, and the case adds roughly 40 hours of total playtime.
Sound-wise you get 13 mm dynamic drivers, 32 ohm impedance, 98 dB sensitivity and a 20 Hz–20 kHz range — a standard full-range tuning with an in-ear, ergonomic shape and S/M/L ear tips in the box. IPX5 covers sweat and light rain, so a run or a rainy walk is fine, but don't swim in them. I'd steer you here if you take a lot of calls in loud places and want touch controls, voice assistant access and a clean Bluetooth 5.4 connection. I'd steer you elsewhere if playtime per charge is your number-one metric, or if you specifically want noise cancelling for your own listening rather than for your call partner.
The AOSRAU Earbuds are the more feature-dense of the two. The headline number is battery: 9 hours continuous on a single charge, with 36 hours total in the case and a 1.5-hour case charge. A smart LED display on the case shows battery status in real time, which is a small thing that saves you from the classic "died mid-call" surprise. If you fly long routes, work shifts, or just hate charging, that gap over the HTT-21 is the whole argument.
The second headline is translation. The companion app supports 14 languages — including English, Spanish, French, German, Japanese, Korean, Arabic and Vietnamese — with free lifetime access to all of them, plus several modes: Free Talk, Translation Machine, Phone+Headphones and Binaural, where each person wears one earbud and speaks by touch. For one-on-one conversations across a language barrier, that Binaural mode is the interesting one. I'll be straight with you: this is app-dependent, so it only works as well as the app does, and I can't vouch for translation accuracy from a spec sheet.
On audio, the 14.2 mm dynamic driver is slightly larger than the HTT-21's 13 mm, with 32 ohm impedance and Bluetooth 5.4 rated to 15 meters and under 100 ms latency. Each earbud weighs 3.1 g, which is light enough that ear-canal pressure is a real design consideration they've addressed. IP7 waterproofing goes further than IPX5 — sweat, rain, cycling, hiking. Touch controls cover play/pause, volume, tracks, calls and voice assistant, with Android and iOS compatibility. The 2-year manufacturer warranty is also longer than the HTT-21's 1-year.
Buy these if battery life, waterproofing and translation are your priorities. Skip them if you want the shortest, most predictable path to a clear phone call and nothing else.
Side-by-Side: Which Should You Choose?
• Best battery life → AOSRAU Earbuds. 9 hours per charge and 36 in the case beats 6 and 40 on the per-charge figure that actually matters.
• Best for travel and translation → AOSRAU Earbuds. 14 languages with free lifetime app access and multiple conversation modes.
• Best for workouts and wet weather → AOSRAU Earbuds. IP7 versus IPX5, plus 3.1 g per bud.
• Best for low-latency gaming and video → HARMONY TWENTY-TWO HTT-21. A 45 ms latency rating is the tighter of the two.
• Best for topping up in a hurry → HARMONY TWENTY-TWO HTT-21. 10 minutes for 100 minutes of playback; the AOSRAU charges in 1.5 hours.
• Best for a bigger driver and fuller low end → AOSRAU Earbuds. 14.2 mm versus 13 mm.
• Best for longer warranty coverage → AOSRAU Earbuds. 2 years against 1.
If I had to pick one for myself, I'd take the HARMONY TWENTY-TWO HTT-21. In my opinion, the 4-mic ENC setup, the 45 ms latency and the 10-minute fast charge cover the three things that actually annoy me day to day: muffled calls, audio drift, and a dead battery before I get home. The AOSRAU is the better all-rounder on paper — longer battery, tougher waterproofing, translation — and if you travel or train hard, I'd point you there instead. But for calls, I'd go HTT-21. Either way, check the current price on Amazon before you commit, since that's the one thing a spec sheet can't tell you.
how to use wireless headphones mic on pc
Pair the earbuds over Bluetooth 5.4, then open your computer's sound settings and set the earbuds as both the output and the input device. On the HTT-21, ENC handles background noise on the mic side; on the AOSRAU, the 4-mic ENC does the same job. If callers can't hear you, confirm the input isn't still set to your laptop's built-in mic.
can you use bluetooth headphones as a mic
Yes — both of these have built-in microphones for calls. The HTT-21 uses a 4-mic ENC array to reduce background noise on your voice, and the AOSRAU uses 4 ENC mics with a manufacturer-claimed 90% background-noise filter. Neither is a standalone studio mic, but both are designed for voice calls, meetings and voice assistant use.
do all bluetooth headphones have a microphone
No. Bluetooth headphones without a mic exist, usually for pure listening. Both products here do include mics: the HTT-21 is built around ENC call noise cancelling, and the AOSRAU lists 4 ENC noise cancelling mics plus voice assistant activation. If calls matter to you, check the spec sheet before buying any pair.
how to use mic on wireless headphones
Put the earbuds in, connect over Bluetooth, and use the touch controls to answer calls — both models support touch call handling and voice assistant activation. For PC use, select the earbuds as your input device in system settings. Keep in mind ENC improves what your caller hears; it doesn't silence the noise around you while you listen.
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