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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-27 · 7 min read · Independent comparison
• WUNIAK Case — biggest strength: soft, shock-resistant silicone that guards a specific pair of earbuds against scratches, bumps and drops, plus a metal carabiner and cleaning pen in the box.
• WUNIAK Case — biggest trade-off: it isn't earbuds at all. It only fits one model, and you have to already own that model for it to do anything.
• QFX Splashproof — biggest strength: a full wireless earbud setup — Bluetooth 5.3, 10mm dynamic drivers, touch controls, a splashproof LED charging case and three gel tip sizes.
• QFX Splashproof — biggest trade-off: the earbuds themselves are rated for up to 3 hours of play time, so long listening sessions mean regular trips back to the case.
• Who each one is for: pick WUNIAK Case if you already have the Huawei FreeBuds Pro 4 and want to stop scratching them. Pick QFX Splashproof if you need earbuds in your ears today for workouts, commutes and calls.
The WUNIAK Case is a single-purpose accessory, and it's honest about that. It's a soft silicone shell designed specifically for the Huawei FreeBuds Pro 4 True Wireless Stereo earphones — not for other models, and not for anything else. If that's your earbuds, the fit is the whole point. The material is elastic, so it wraps the charging case tightly, and the surface gets a special oil-spray treatment that resists fingerprints and dust. That matters more than it sounds: a glossy case that lives in a pocket or bag picks up smudges fast, and a matte, easy-wipe finish keeps it looking presentable without babysitting it.
What I like about the design here is the anti-shock, anti-slip intent. Silicone absorbs small impacts and adds grip, which is exactly what you want if your earbuds case tends to slide off a table or get tossed into a backpack. The included metal carabiner lets you hang the whole thing off a backpack strap, a belt loop or a keychain, which is a genuinely practical way to avoid the classic "where did I leave my earbuds" panic. There's also a cleaning pen in the box, plus a lanyard, and the case is built to charge with a cable without you having to peel the cover off first. A double-sided adhesive layer inside helps hold the charging case in place so it doesn't slip out when you're heading out the door.
Who should buy it? Anyone who treats their FreeBuds Pro 4 as a long-term purchase and wants cheap insurance against cosmetic damage and drops. Who should skip it? Anyone who doesn't own that specific Huawei model — the sheet is explicit that it's not compatible with other earbuds — and anyone shopping for actual earbuds. This is protection, not sound.
The QFX Splashproof is the opposite kind of purchase: it's the whole package. You get true wireless earbuds, a charging case, and three sets of soft gel inserts in small, medium and large, so you can dial in a fit instead of settling for whatever tips come pre-installed. The 10mm dynamic drivers are the headline spec for sound — QFX tunes them for punchy bass with detailed mids and highs, which is a sensible target for music, calls and video.
On the wireless side, Bluetooth 5.3 is the current-generation standard, and the practical benefits are the ones you actually notice: quicker pairing, a more stable connection, lower power draw and a bit more usable range. The case has a digital LED display so you can see battery level at a glance rather than guessing from a blinking dot, and it recharges over USB-C — the same cable most people already carry. Controls are touch-based on the earbuds themselves, so you can manage music and calls with a tap instead of reaching for your phone.
Then there's the splashproof part of the name. The design is built to shrug off sweat and splashes, which is the realistic use case for most people: gym sessions, runs, rainy walks, a water bottle mishap at your desk. It won't survive a swim, and nobody should treat a splash rating as a diving certification, but it covers the everyday moisture that kills unprotected earbuds.
The honest trade-off is play time. The earbuds are rated for up to 3 hours per charge, with the 300mAh case topping them back up between sessions. For a workout or a commute, that's fine. For a full workday of continuous listening, you'll be docking them more often than you'd like.
Who should buy it? Someone who needs affordable TWS earbuds now, wants a proper fit from multiple tip sizes, and cares about sweat resistance. Who should skip it? Anyone who needs marathon battery life between charges, or who wants a premium-feeling accessory rather than a budget daily driver.
• Best for protecting earbuds you already own → WUNIAK Case. It's purpose-built for the Huawei FreeBuds Pro 4 and nothing else.
• Best for actually listening to music → QFX Splashproof. It's the only one of the two that makes sound.
• Best for workouts and sweaty commutes → QFX Splashproof. The splashproof build is designed for exactly that.
• Best for carrying convenience → WUNIAK Case. The carabiner and lanyard let you clip your earbuds case where you'll actually find it.
• Best for fit options → QFX Splashproof. Three gel tip sizes (S/M/L) beat a one-size compromise.
• Best for modern wireless features → QFX Splashproof. Bluetooth 5.3, touch controls and a USB-C charging case.
• Best for keeping the case clean → WUNIAK Case. The oil-spray finish is treated to resist fingerprints and dust.
• Best if you need long battery life → neither is built for that. QFX Splashproof gives up to 3 hours of earbud play time; WUNIAK Case isn't a battery product at all.
In my opinion, these two don't compete — they solve different problems, so my recommendation splits cleanly. If you already own the Huawei FreeBuds Pro 4 and your only complaint is scratches, drops and a case that keeps disappearing into your bag, I'd buy the WUNIAK Case. It's a small, well-considered accessory with a carabiner, a lanyard and a cleaning pen that all earn their place.
If you don't own those earbuds yet and you're shopping for cheap TWS earbuds, I'd buy the QFX Splashproof. Bluetooth 5.3, 10mm drivers, three tip sizes and a splashproof LED case cover the basics properly, and the 3-hour play time is the one compromise I'd accept at this end of the market. Check the current price on Amazon before you commit, since that's the factor most likely to tip you one way or the other.
what is tws earbuds
TWS stands for True Wireless Stereo — earbuds that have no wire between the left and right pieces at all. Each bud connects independently over Bluetooth, and the two together produce the stereo sound. Both products here deal with TWS gear: QFX Splashproof is a TWS earbud set, and WUNIAK Case is a protective shell for a TWS charging case.
what is tws earbuds means
It means the two earbuds are truly wireless — no cable running between them and no cable to your phone. The audio is split into left and right channels and streamed wirelessly, which is why TWS sets pair as a pair rather than as two separate devices. Practically, it's what lets you pop one bud in for a call and leave the other in the case.
how much is tws earbuds
There's no single answer, because TWS earbuds span everything from basic budget sets to premium models. The QFX Splashproof is positioned as an affordable everyday pair, while the WUNIAK Case is a low-cost accessory rather than earbuds. For the exact current figures on either one, use the price button on this page.
how to tws earbuds
Charge the case first, then take the buds out and they'll enter pairing mode and show up in your phone's Bluetooth list. Select them, and the two buds connect to each other automatically. With QFX Splashproof you also get three gel tip sizes, so try each one and keep the set that seals best — a good seal is what makes the bass and the fit work.
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