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If you want a feature-packed pair of earbuds with a charging case that doubles as a power bank and a genuinely informative LED display, choose VOLT PLUS TECH Pro Earbuds; if you need a lightweight, no-frills sport earbud that just gets out of your way during a jog, choose ZRATFWLJMDK Earphones.
• VOLT PLUS TECH Pro Earbuds — biggest strength: A 2,000 mAh charging case that pushes total listening time toward 25 hours, plus quad microphones with CVC 8.1 noise reduction and a touch control scheme that covers volume, track skipping and voice assistant wake-up.
• VOLT PLUS TECH Pro Earbuds — biggest trade-off: All that hardware makes it the bulkier, heavier option (4 ounces total, with a 2.1-ounce case), and the feature list is dense enough that you'll want the manual.
• ZRATFWLJMDK Earphones — biggest strength: Lightweight, simple and sport-focused — a friction-fit in-ear design with touch controls and an LED battery readout, built for people who want to press play and run.
• ZRATFWLJMDK Earphones — biggest trade-off: Far less detail is documented about its internals — no stated Bluetooth version, no noise-cancellation tech, no IP rating — so it's a simpler bet with less to verify.
• Who VOLT PLUS TECH is for: Commuters, call-heavy workers, travelers and anyone who wants one case that charges both the earbuds and (via the power bank function) other devices.
• Who ZRATFWLJMDK is for: Gym-goers, runners and casual listeners who prioritize a light, secure fit over an extensive spec sheet.
The VOLT PLUS TECH Pro Earbuds are the more ambitious product of the two. The headline feature is the charging case: a 2,000 mAh battery that the manufacturer says delivers roughly 25 hours of total playtime, with each earbud streaming beyond 5 hours on its own and the case adding the rest. The case also functions as a power bank, which is unusual in this category and genuinely useful if you're traveling and want to top up a phone in a pinch.
The second standout is the LED display, which shows the power level of both the charging case and the earbuds separately. That sounds like a small thing until you've owned earbuds that died mid-call with no warning. Seven power levels are shown, so you get a real sense of how much runway you have left.
On audio and calls, the specs are specific: Bluetooth 5.3, quad microphones (two per earbud), CVC 8.1 noise reduction that the manufacturer claims cuts noise by up to 30 dB, a 26 mm dynamic driver, 103 dB sensitivity and 25.94 ohm impedance. Latency is listed at 9 milliseconds, which matters if you're gaming or watching video and don't want lip-sync drift. Water resistance is IPX4, so rain and sweat are fine but don't swim in them.
Controls are touch-based, and the manufacturer lists volume adjustment, previous/next track, and wake-up of the Android or iOS voice assistant. You also get three tip sizes (S/M/L), a USB-C cable and a one-year manufacturer's limited warranty.
Who should buy it: Anyone who makes a lot of calls, travels, or wants a case that pulls double duty as a power bank. Also a reasonable pick if you tinker with a Raspberry Pi Zero v1.3 — the manufacturer explicitly lists compatibility with that board alongside Android, iOS, Mac and Windows.
Who should skip it: If you want the lightest possible earbud for pure running, the 4-ounce total weight and 2.1-ounce case are more than a minimalist setup needs.
The ZRATFWLJMDK Earphones take the opposite approach. There's no power bank, no noise-cancellation claim, no stated IP rating. What you get instead is a lightweight plastic in-ear design (1.76 ounces total) that the manufacturer says fits firmly and won't fall out during jogging or fitness training. For a lot of people, that's the entire job description of a sport earbud.
The audio story is built around a dynamic speaker unit delivering stereo surround sound with what the manufacturer describes as clear, layered audio. There's a high-sensitivity touch panel for track skipping, call answering and volume — so you can leave your phone in your pocket or armband. The charging case has an LED digital display showing remaining battery for both the earbuds and the case, which is the same convenience the VOLT PLUS TECH offers.
Pairing is standard Bluetooth with wide compatibility across phones, tablets and laptops, and the manufacturer pitches it as plug-and-play with no complicated setup. The listing also mentions a broad catalog of related headphone styles from the same store, but for this specific model, the documented details are thinner: no Bluetooth version, no driver size, no battery capacity figure, no IP rating.
Who should buy it: Runners, gym regulars and casual listeners who want something light, simple and secure, and who don't need ANC or a power bank in their pocket.
Side-by-Side: Which Should You Choose?
• Best for battery capacity and total playtime → VOLT PLUS TECH Pro Earbuds. A 2,000 mAh case and a claimed 25-hour total is the bigger number here.
• Best for charging other devices → VOLT PLUS TECH Pro Earbuds. The case doubles as a power bank; the ZRATFWLJMDK case is a charger only.
• Best for call clarity in noisy environments → VOLT PLUS TECH Pro Earbuds. Quad mics plus CVC 8.1 noise reduction is a documented, specific setup.
• Best for low-latency gaming and video → VOLT PLUS TECH Pro Earbuds. A 9 ms latency figure is listed; nothing comparable is stated for the ZRATFWLJMDK.
• Best for lightweight comfort during sport → ZRATFWLJMDK Earphones. At 1.76 ounces total, it's the lighter package by a wide margin.
• Best for documented water resistance → VOLT PLUS TECH Pro Earbuds. IPX4 is stated; the ZRATFWLJMDK's listing doesn't specify an IP rating.
• Best for a simple, no-setup experience → ZRATFWLJMDK Earphones. Fewer features, fewer things to configure.
• Best for a Raspberry Pi Zero v1.3 project → VOLT PLUS TECH Pro Earbuds. That compatibility is explicitly listed.
I'd buy the VOLT PLUS TECH Pro Earbuds. In my opinion, the combination of a 2,000 mAh power-bank case, a clear two-part LED battery display, quad-mic CVC 8.1 noise reduction, Bluetooth 5.3 and a stated 9 ms latency gives you far more to work with across commuting, calls, gaming and travel. The ZRATFWLJMDK is the better pick only if your single priority is a featherweight earbud for the gym — and even then, I'd want the extra documented specs of the VOLT PLUS TECH as insurance. Check the current price on Amazon before deciding, since that's the one variable I can't compare here.
Both are built for activity, but they trade off differently. The ZRATFWLJMDK is the lighter option at 1.76 ounces and is marketed specifically for a secure sport fit. The VOLT PLUS TECH carries an IPX4 water-resistance rating, which the ZRATFWLJMDK's listing doesn't specify — so if you sweat heavily or run in rain, that's a point in its favor.
Yes. Both charging cases show remaining battery via an LED display. The VOLT PLUS TECH goes a step further by showing the power level of the case and the earbuds separately across seven power levels, which makes it easier to plan a charge.
Only the VOLT PLUS TECH documents noise-cancellation technology: quad microphones with CVC 8.1 reduction, claimed to cut noise by up to 30 dB, plus active and passive noise control modes. The ZRATFWLJMDK listing doesn't mention noise cancellation at all.
Both are listed as compatible with Bluetooth-enabled phones, tablets and laptops. The VOLT PLUS TECH additionally lists Android, iOS, Mac, Windows and the Raspberry Pi Zero v1.3 development board among its compatible devices.
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See also: VOLT PLUS TECH Pro Earbuds vs Bitstik Sports, Loluka in-Ear vs VOLT PLUS TECH PRO: Ipx4 Waterproof, Yoley Factorymall Bulk Earbuds vs Vonaural Pro‑level Hybrid Active