If you want a wired running earphone with a detachable cable, a 10mm DLC driver, and a built-in-mic option on the Type-C version, choose TINHIFI C1; if you need interchangeable sound-tuning nozzles and an alloy housing, choose syeindunce Kefine Klean SV. For running, I’d lean toward the C1 for its stated mic option and flexible connection choices, while the Klean SV is the more adjustable listening pick.
• TINHIFI C1 strength: 10mm DLC driver with a dual magnetic circuit and dual-cavity design; trade-off: the supplied connection and mic depend on which cable version you choose.
• syeindunce Kefine Klean SV strength: two interchangeable nozzles let you choose between a warmer presentation and a brighter one; trade-off: the supplied configuration is identified as a 4.4mm version, so check that it suits your audio source.
• C1 fit: in-ear design, multiple included ear-tip sizes, and detachable 0.78mm 2-pin cable.
• Klean SV fit: 10mm DLC dynamic driver, alloy housing, detachable 0.78mm 2-pin cable, and passive noise control.
• Choose the C1 if a built-in mic on the Type-C option and versatile everyday use matter most; choose the Klean SV if swapping tuning nozzles is the deciding feature.
The C1 is a wired, in-ear earphone built around a 10mm DLC composite diaphragm dynamic driver. TINHIFI pairs that driver with a dual magnetic circuit and dual-cavity design intended to manage airflow and bass response. For everyday listening, that combination points toward a full-range presentation with emphasis on controlled bass, clear mids and highs, and room for changes in musical intensity. Those are design aims, not a guarantee that every listener will hear the same result.
The practical selling point is that the C1 is offered with different connection options. The Type-C version includes a built-in microphone and DAC, while the listed 3.5mm connection is another option. That makes it relevant to someone who wants one wired earphone for music and calls, provided they choose the version that matches their device. Its detachable 0.78mm 2-pin cable can also be replaced or upgraded, and the package includes S, M, and L ear tips to help with fit.
For running, the mic-equipped Type-C version may suit someone who wants to take calls without switching headphones. But the C1 is still a wired in-ear model, and the sheet gives no sweat-resistance rating, battery information, or running-specific retention feature. I would not treat its cable or fit as proof that it is made for vigorous exercise. Skip the C1 if you need a documented sweat-resistant design or a wireless setup for running.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
syeindunce Kefine Klean SV: Who It's For
The Klean SV also uses a 10mm DLC dynamic driver, but its clearest distinction is the pair of interchangeable nozzles. The silver nozzle is described as warmer and smoother; the black nozzle is intended to sound brighter, more transparent, and higher in resolution. That gives listeners a simple way to change the tuning without changing earphones. If you often switch between mellow playlists and recordings where you want more treble presence, this is a useful form of flexibility.
Its housing is made from alloy casting, with a polished finish and a screw-secured construction. The cable uses silver-plated copper and detaches through a 0.78mm 2-pin connection. The sheet also lists passive noise control, which means the in-ear fit provides some physical isolation; it does not indicate active noise cancellation. The stated 32-ohm impedance and 107 dB sensitivity identify the electrical specifications, but they do not by themselves establish how loud it will sound with every phone or portable player.
The Klean SV could fit someone who values a robust-feeling metal housing and wants two tuning choices in a wired IEM. For running, though, the sheet does not specify a microphone, sweat resistance, or an exercise-oriented fit feature. Its listed configuration also names a 4.4mm connection, so check connector compatibility before choosing it for a phone or other source. Skip the Klean SV if you need a stated built-in mic or documented protection against sweat.
• Best for a mic-equipped Type-C option → TINHIFI C1. The Type-C version is described as including a built-in microphone and DAC. Confirm that you are selecting that version, since the C1 is also offered with a 3.5mm connection.
• Best for two sound signatures → syeindunce Kefine Klean SV. Its silver and black nozzles are described as warmer/smoother and brighter/more transparent, respectively.
• Best for flexible cable replacement → both. Each uses a detachable 0.78mm 2-pin connection, so neither is locked to a permanently attached cable.
• Best for a metal housing → Klean SV. Its enclosure is described as alloy, while the C1 combines a CNC metal faceplate with a resin shell.
• Best for choosing ear-tip size from the included set → C1. The listed package includes S, M, and L tips.
• Best for passive noise control listed in the specifications → Klean SV. Its sheet identifies passive noise cancellation; the C1 lists no noise control.
• Best for a running buyer prioritizing calls → C1, conditionally. The Type-C version has the stated mic, but neither product has a stated sweat-resistance rating or a wireless connection.
• Best for a running buyer wanting long battery life → neither. Both are wired, and neither sheet provides a battery specification. They do not need to be charged as wireless earbuds, but that is different from a documented battery-life claim.
Buying Considerations
Treat running suitability cautiously. Neither data sheet states an IP rating, sweat resistance, or a specific mechanism to secure the earphones during exercise. Both products are wired in-ear models, so the cable will be part of the running experience. If you are looking for the best sweat resistant headphone for running, these specifications do not confirm that either one qualifies. Likewise, neither one can be called the best with mic headphones for running without considering connection choice and the fact that the Klean SV sheet does not list a mic.
Think about sound adjustment. The Klean SV gives you a defined tuning choice through its nozzles. The C1 instead emphasizes its driver, magnetic circuit, and cavity structure, with no interchangeable nozzle tuning listed. If you like being able to change the sound signature using included parts, the Klean SV has the clearer advantage. If you want the stated Type-C mic option and included ear-tip sizes, the C1 is more directly aligned with those needs.
Do not read wired operation as a battery claim. Neither needs a wireless-earbud battery to power its connection, but the sheets provide no battery-life figure. If your search is for long battery life in ear earbuds for running, these are not a direct match for that particular requirement. They are wired IEMs, so source-device compatibility and cable use matter more than charging endurance.
Compare the physical design with your priorities. The C1 uses a resin shell with a metal faceplate and includes multiple ear-tip sizes. The Klean SV uses an alloy housing and has a screw-secured construction. Those are different build choices, not a basis for assuming one will fit every ear better or last longer in all conditions. Fit depends on the listener, and neither sheet establishes a sweat or impact rating.
For current price, check the product page’s Amazon button. I would compare the exact version and included connection accessories before making a final decision, rather than treating the product names alone as a complete description of what comes in the package.
My Verdict
I would choose the TINHIFI C1, specifically the Type-C version, for running if I wanted wired listening with a stated built-in mic option and replaceable cable. Its connection flexibility and included ear-tip sizes make it the more practical fit for my stated priorities.
Neither is my pick for a buyer who requires documented sweat resistance, wireless freedom, or a specified battery runtime.
For my running use case, the C1 has the more useful listed feature set, with the important caveat that its sheet does not establish sweat protection.
For someone who wants a built-in-mic option, I’d choose the C1 Type-C version. Neither product sheet states sweat resistance or a running-specific retention feature, so I would not assume either is designed for demanding workouts.
The TINHIFI C1 Type-C version is listed with a built-in microphone. The Klean SV sheet does not specify a microphone, so it should not be chosen on the assumption that one is included.
Yes. It includes two interchangeable nozzles: the silver option is described as warmer and smoother, while the black option is intended to sound brighter and more transparent. The C1 sheet does not list interchangeable tuning nozzles.
They are wired models, and neither product sheet provides a battery specification. If your priority is long battery life in in-ear earbuds for running, these do not offer a stated runtime to compare.
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