How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want true wireless earbuds that double as real hearing protection for loud job sites, choose Plugfones Sovereign Duo; if you need true wireless earbuds built for clear calls and PC work with active noise cancellation, choose Lenovo TWS Earbuds. Both cut the cord. They just solve completely different problems, and that is the whole story here.
• Plugfones Sovereign Duo — biggest strength: it is an earplug first and an earbud second, rated at 26dB NRR with foam tips and 21dB with silicone, with two color-coded true wireless sets sharing one case for up to 50 hours of total playtime.
• Plugfones Sovereign Duo — biggest trade-off: everything about it is tuned for protection and durability on the job, not for audiophile sound or smart device integration, and it is the heavier kit by far at 210 g.
• Lenovo TWS Earbuds — biggest strength: Active Noise Cancellation paired with a three-mic ENC system on each earbud, Dolby Atmos tuning, and deep ThinkPad X9 integration with auto call answering and device switching.
• Lenovo TWS Earbuds — biggest trade-off: the standout features lean on the ThinkPad X9 ecosystem, so if you are not in that world you are paying for integration you may not use.
• Pick Plugfones Sovereign Duo if you work in construction, a warehouse, a factory, or behind a mower and need your ears protected while you listen.
• Pick Lenovo TWS Earbuds if you are a ThinkPad X9 user who lives in calls and needs noise cancellation on commutes and in open offices.
The Sovereign Duo starts from a different premise than most earbuds: earplugs first, earbuds second. The tips block harmful noise at 26dB NRR with the foam fit or 21dB with the silicone, ANSI S3.19 tested and OSHA compliant when used to OSHA regulations. That single design decision shapes everything else. You are not buying these to hear every detail of a symphony. You are buying them so you can hear your podcast, your music, or a hands-free call without a jackhammer, a mower, or a factory line steamrolling your ears.
The battery system is genuinely clever for shift work. You get two color-coded true wireless sets, Obsidian and Lava, sharing one charging case. Wear one set while the other charges and you do not stop mid shift. Plugfones rates total playtime at up to 50 hours, with a 10-minute charge time. Four pairs of plugs are included, two foam and two ComforTiered silicone, and the replaceable tips keep the seal fresh as they wear. Controls are glove friendly, which matters more than it sounds when your hands are busy. There is also a sound-focused mic that pulls your voice out of machinery and wind, plus Bluetooth 5, dynamic drivers, and a 20 Hz to 20,000 Hz range.
Who should buy it: tradespeople, warehouse and factory workers, landscapers, mowers, and anyone whose day involves sustained loud noise and who wants one device for both protection and audio. Who should skip it: casual listeners who want premium sound, app-based EQ, or deep phone integration. This is a work tool with audio, not a lifestyle earbud. It also carries a 180-day warranty, which is shorter than the Lenovo's coverage.
The Lenovo TWS Earbuds are built around the ThinkPad X9. That is the headline: engineered for seamless integration with the X9 series, enabling automatic call answering, smooth device switching, and intuitive PC-level controls for work and entertainment. If you are a ThinkPad X9 owner, that is a real convenience advantage no generic earbud can match, because the earbuds and the machine are designed to talk to each other.
The noise story is the other pillar. Active Noise Cancellation works alongside a three-mic Environmental Noise Cancellation system on each earbud to reduce background noise and keep your voice clear. Combined with PC-powered voice processing, that is aimed squarely at people who spend their day on calls in busy offices or noisy commutes. Dolby Atmos tuning, powered by your PC, adds an immersive layer for music and media, and the balanced armature driver with a 12.2 mm driver size covers a 20 Hz to 20 kHz range.
Comfort and endurance look solid on paper. Each earbud weighs less than 6 g, multiple silicone eartip sizes are included, and the case measures 2.52 by 1.02 by 1.81 inches at 46.9 g. That is a pocket-friendly kit. Battery life is up to 7 hours per charge and up to 36 hours with the case, with a 1.5-hour charge time. IP55 water resistance handles sweat, dust, and splashes. Connectivity is Bluetooth 5.3 with a 10-meter range, and control is via app. It also carries a 3-year manufacturer warranty, which is a notably long commitment.
Who should buy it: ThinkPad X9 users, remote and hybrid workers, and commuters who want ANC and clear call pickup. Who should skip it: anyone who needs certified hearing protection for genuinely hazardous noise. ANC is not the same thing as a 26dB NRR earplug, and the Lenovo makes no such claim.
• Best for hearing protection → Plugfones Sovereign Duo. 26dB NRR with foam, 21dB with silicone, ANSI S3.19 tested and OSHA compliant when used to OSHA regulations. The Lenovo offers no NRR rating at all.
• Best for total battery life → Plugfones Sovereign Duo. Up to 50 hours of total playtime thanks to two swappable sets sharing one case, versus up to 36 hours with the Lenovo case.
• Best for call clarity in the office → Lenovo TWS Earbuds. Three-mic ENC on each earbud plus ANC and PC-powered voice processing is aimed at calls, not job-site noise.
• Best for PC and ThinkPad X9 integration → Lenovo TWS Earbuds. Auto call answering, device switching, and PC-level controls are baked in.
• Best for glove-friendly, rugged use → Plugfones Sovereign Duo. Glove-friendly controls, replaceable tips, and a design that stays secure through climbing, lifting, and bending.
• Best for all-day comfort and light weight → Lenovo TWS Earbuds. Under 6 g per earbud with multiple eartip sizes, versus a 210 g kit for the Plugfones.
• Best for water and dust resistance → Lenovo TWS Earbuds. IP55 protects against sweat, dust, and splashes; the Plugfones sheet lists no IP rating.
• Best for warranty length → Lenovo TWS Earbuds. A 3-year manufacturer warranty versus 180 days on the Plugfones.
In my opinion, these two barely compete, because they are answering different questions. If your day is loud and your ears are the thing you are protecting, I would buy the Plugfones Sovereign Duo. The 26dB NRR, OSHA-compliant design, glove-friendly controls, and the two-set 50-hour battery system are exactly what a shift worker needs, and nothing on the Lenovo sheet replaces that. If you are a ThinkPad X9 user who lives on calls, I would buy the Lenovo TWS Earbuds instead: ANC, three-mic ENC, Dolby Atmos, and native PC integration make it the better office and commute companion. Match the tool to the job.
how to connect true wireless earbuds
Take both earbuds out of the charging case and they power on and enter pairing mode automatically. Then open your phone or PC Bluetooth settings, find the listed device name, and select it. The Plugfones Sovereign Duo uses Bluetooth 5; the Lenovo uses Bluetooth 5.3 with a 10-meter range.
how to pair true wireless earbuds
Put the earbuds in the case, then remove them so they pair to each other first. On your device, enable Bluetooth, scan for available devices, and tap the earbud name when it appears. For the Lenovo TWS Earbuds, ThinkPad X9 users get smoother automatic switching between devices.
how to use true wireless earbuds
Charge them in the case first, then wear them with the tips that seal best for your ears. The Plugfones Sovereign Duo has glove-friendly media controls and four pairs of tips; the Lenovo is controlled through its app and supports ANC plus ENC. Adjust volume and playback from the controls your model provides.
how to bluetooth true wireless earbuds
Turn Bluetooth on in your device settings and make sure the earbuds are in pairing mode, usually by removing them from the case. Select the device from the list and wait for the connection confirmation. Both models are fully wireless with no headphone jack, so Bluetooth is the only connection method.
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.
See also: Tuanzi X9 vs Xmenha Touchscreen TWS True: TWS Earbuds, SOAR NHL Unisex True vs ZZU Earbuds: True Wireless Stereo, OTRBCOY True vs CYBERDOT Earbuds: True Wireless Stereo