We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 7 min read · Independent comparison
If you want true wireless in-ear earbuds with a sealed fit, app-tuned sound and serious water protection, choose EarFun Free 2S; if you need an open-ear clip-on design that stays put around your ear without blocking the world out, choose Kinglucky Clip-On Earbuds. Both are wireless, neither has a headphone jack, and they solve completely different problems. The "wired in ear" question people keep searching for is really a fit question — and these two answer it from opposite directions.
• EarFun Free 2S — biggest strength: a 7mm dynamic driver with deep bass, four microphones for calls, an app with custom EQ and game mode, and IPX7 waterproofing that handles rain and sweat without drama.
• EarFun Free 2S — biggest trade-off: it is a sealed in-ear design, so it blocks outside sound and depends on you getting the tip seated properly — plus it only lists 7 hours per charge, far less than the Kinglucky case total.
• Kinglucky Clip-On Earbuds — biggest strength: a 4.0g per-bud open-ear clip with a Ni-Ti memory-wire bridge you can pinch or widen for fit, 40 hours total with the case, Bluetooth 6.0 multipoint and IP56 protection.
• Kinglucky Clip-On Earbuds — biggest trade-off: the open-ear shape deliberately does not seal your canal, so bass depth and isolation are limited compared to a true in-ear bud.
• Who each pick is for: EarFun Free 2S for someone who wants immersive sound, app control and gym-proof waterproofing; Kinglucky for someone with small ears, glasses or earrings who wants awareness and all-day comfort.
The EarFun Free 2S is a conventional true wireless in-ear bud, and it leans hard into sound and call quality. The 7mm composite dynamic driver is tuned for powerful bass with detailed mids and treble, and the frequency range runs the full 20Hz–20kHz span. If your priority is music that actually hits, this is the more engaging of the two on paper.
The feature list is where it separates itself. Four built-in microphones work to isolate your voice and reduce surrounding noise during calls, which matters if you take meetings outdoors or on a noisy street. The EarFun App adds multi-EQ adjustment, customizable touch controls, a battery readout and a game mode that lowers latency — genuinely useful if you play mobile games or watch video and hate lip-sync drift.
Durability is the other headline. IPX7 waterproofing means rain and sweat are not a concern, and charging works either over USB-C or wirelessly. The buds weigh 3.99g each, use Bluetooth 5.2, and list 7 hours of average battery life with a 32-ohm impedance and 100dB sensitivity, so they are easy to drive from a phone.
Kinglucky Clip-On Earbuds: Who It's For
The Kinglucky Clip-On Earbuds take the opposite approach. These are open-ear buds that clip around the outside of your ear rather than sitting inside the canal. Each bud weighs just 4.0g — the brand says that is 25% lighter than the previous version — and the C-shaped bridge uses Ni-Ti memory wire, so you can pinch it narrower for a firmer hold or widen it for a looser feel, then slide it up or down to line the speaker up near your ear canal.
That adjustability is the whole point. The open-ear design avoids an in-ear seal entirely, which the spec sheet notes makes it comfortable alongside glasses and earrings. If regular in-ear tips keep working their way loose, or if you simply cannot stand the pressure of a sealed tip, this is the design that sidesteps the problem instead of fighting it.
Audio comes from a 12mm dynamic driver with a Gen 2 dual-diaphragm acoustic design, aimed at clearer vocals, richer mids and balanced detail for music, podcasts and audiobooks. Dual-mic ENC helps cut surrounding noise on calls while the open shape keeps you aware of what is happening around you. Battery is listed at up to 6 hours per charge and up to 40 hours with the case, Bluetooth 6.0 adds multipoint so you can hop between phone, tablet and laptop, and IP56 with a hydrophobic coating handles sweat, rain and splashes. The finish is Rose Gold.
Buy the Kinglucky if you want awareness, a featherweight clip-on fit, glasses-friendly comfort and long total runtime. Skip it if you want deep isolation or maximum bass impact — an open ear simply cannot deliver that the way a sealed in-ear can.
• Best for bass and immersive music → EarFun Free 2S. A sealed in-ear fit with a 7mm dynamic driver will always out-punch an open-ear design for low-end weight.
• Best for staying aware of your surroundings → Kinglucky Clip-On Earbuds. The open-ear shape keeps your canal uncovered on purpose.
• Best for total battery life → Kinglucky Clip-On Earbuds. Up to 40 hours with the case versus 7 hours per charge on the Free 2S.
• Best for water and sweat protection → EarFun Free 2S. IPX7 is a higher water-resistance rating than IP56.
• Best for glasses wearers and small ears → Kinglucky Clip-On Earbuds. The Ni-Ti memory-wire bridge and open fit are explicitly built around that use case.
• Best for call clarity and app tuning → EarFun Free 2S. Four microphones plus multi-EQ, custom touch controls and game mode give you more to work with.
• Best for switching between devices → Kinglucky Clip-On Earbuds. Bluetooth 6.0 with multipoint beats Bluetooth 5.2 without it.
• Best for charging flexibility → EarFun Free 2S. It supports both USB-C and wireless charging.
In my opinion, the EarFun Free 2S is the one I would buy for everyday listening. The combination of a sealed in-ear fit, a 7mm driver tuned for bass, four call microphones, app-level EQ and game mode, and IPX7 waterproofing covers the widest range of real situations — commuting, calls, workouts, late-night music. The Kinglucky is the smarter pick only if comfort and awareness beat sound quality for you, or if in-ear tips have never worked with your ears or your glasses. Decide which of those two problems you actually have, and the choice makes itself.
how to make wired earbuds stay in ear
Fit is about the seal and the angle, not the cable. Seat the tip gently into the canal and rotate it slightly until it feels snug rather than jammed, then let the cable hang with a little slack instead of tugging. With true wireless buds like the EarFun Free 2S you can also swap in a different eartip size — the package includes an eartip — because the right tip does most of the work.
how to make apple wired earbuds stay in ear
The same principle applies: those buds rely on a shallow resting fit, so they loosen when the cable pulls. Route the cable over your ear or clip it to your shirt to remove the downward drag, and avoid pushing the bud deeper than it is designed to sit. If a sealed fit is the real problem, an in-ear design like the EarFun Free 2S with a rounded tip gives you a more anchored hold than a shallow one.
how to put earbuds in your ear
Insert at a slight forward angle rather than straight in — your ear canal is not perfectly vertical. For in-ear models, seat the tip, then twist a few degrees until the seal feels even on all sides. For open-ear clip-ons like the Kinglucky, the method is different: pinch the Ni-Ti bridge narrower for a firmer grip or widen it for comfort, then slide the bud up or down so the speaker sits near your ear canal without plugging it.
how to keep earbuds in ears
Consistency comes down to matching the design to your ear. Sealed in-ear buds stay put when the tip size and insertion angle are right; open-ear clips stay put when the memory-wire bridge is adjusted to your ear's shape. If you wear glasses or earrings, the Kinglucky's open design avoids the pressure points that push in-ear tips loose in the first place.
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: Wekily Earbuds vs Kinglucky Open-Ear Clip-On Earbuds, Yeforu Open Over Ear vs Kinglucky Open-Ear Clip-On Earbuds, kurdene Open Ear Earbuds vs CoolJumper Clip-on Ear Earbuds