We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-25 · 5 min read · Independent comparison
If you want a complete, ready-to-pair earbud setup with a playful charging case, choose AMAFACE Tiny; if you need a protective cover for a Technics EAH-AZ100 charging case you already own, choose kwmobile Earphones Case.
• AMAFACE Tiny — biggest strength: It's a full wireless earbud system, not just a case. Bluetooth 5.3, touch controls, active noise cancellation, and a cartoon charging case that adds roughly 30 hours of playback on top of 5 hours per charge.
• AMAFACE Tiny — biggest trade-off: The design leans heavily toward kids and cartoon themes. If you want a discreet, adult-looking charging case, this isn't it.
• kwmobile Earphones Case — biggest strength: A clear, flexible TPU cover that protects a Technics EAH-AZ100 charging case while keeping the original look visible, with precise cutouts for the port and buttons.
• kwmobile Earphones Case — biggest trade-off: It's a cover only. It does not include earbuds, a charging case, or any audio hardware — you must already own the Technics EAH-AZ100.
• Who each pick is for: Buy AMAFACE Tiny if you want earbuds and a charging case together; buy kwmobile Earphones Case if you already have a Technics EAH-AZ100 case and just want to shield it from scratches and drops.
AMAFACE Tiny is a self-contained earbud kit. The set includes the true wireless earbuds, the cartoon charging case, a USB Type-C charging cable, and three sizes of earcips (S, M, L). It runs Bluetooth 5.3 with a 10-meter range, uses a Qualcomm chip with CVC8.0 noise reduction, and supports active noise cancellation through touch controls. The audio side uses a dynamic driver with a 20 Hz to 20,000 Hz frequency range, 16-ohm impedance, and 90 sensitivity.
Battery life is the headline. Each earbud lasts about 5 hours per charge, and the charging case can refill them roughly 3 to 5 times, adding around 30 hours of playback. A 20-minute top-up gets you about 2 hours of talk time, and both the earbuds and the case fully charge in about 1.5 hours. Pairing is quick — take the earbuds out, they pair to each other, then you connect to "B29" on your phone.
This is clearly built with younger listeners in mind. The product is described as popular with children over 3 and adults alike, and the cartoon "Little Devil" theme, silicone tips, and IPX5 water resistance point to everyday use — workouts, school commutes, and casual listening. The touch controls handle play, pause, volume, and track skipping, and calls switch in and out automatically.
Who should skip it: anyone who wants a neutral, understated charging case, or anyone who already owns a different set of earbuds and just needs a cover. This is a whole package, not an accessory. If you care about the current price, check it on Amazon — this page doesn't quote numbers.
The kwmobile Earphones Case is a completely different kind of product. It's a protective cover made from flexible, impact-resistant TPU, and it's built specifically for the Technics EAH-AZ100 charging case. That compatibility is exact — it's not a universal sleeve, and it won't fit other models.
What it does, it does well. The material is tear-resistant and anti-slip, so it grips securely and adds a layer of drop and scratch protection without making the case bulky. Precise cutouts keep the charging port and buttons fully accessible, so you never have to remove the cover to charge or press anything. It goes on and comes off easily thanks to the elastic TPU.
The look is deliberately transparent. Because the cover is colorless, it highlights the original design of the EAH-AZ100 case rather than hiding it. At just 20 grams, it barely adds any weight, and the slim, secure profile keeps the case pocketable. The dimensions (about 3.15 x 1.57 x 1.18 inches) are sized to hug that specific case.
Who should buy it: Technics EAH-AZ100 owners who want everyday protection and don't mind a clear finish. Who should skip it: anyone without that exact model, or anyone hoping this comes with earbuds or a charging case — it's a cover only.
Side-by-Side: Which Should You Choose?
• Best for protecting an existing case → kwmobile Earphones Case. It's purpose-built for the Technics EAH-AZ100 charging case.
• Best for battery life → AMAFACE Tiny. About 5 hours per charge plus roughly 30 extra hours from the charging case.
• Best for a discreet, clear look → kwmobile Earphones Case. The transparent TPU keeps the original case design front and center.
• Best for kids and casual listeners → AMAFACE Tiny. The cartoon theme, IPX5 rating, and touch controls suit younger users and everyday activity.
• Best for port and button access → kwmobile Earphones Case. Precise cutouts mean no removing the cover to charge.
• Best for quick top-ups → AMAFACE Tiny. A 20-minute charge yields about 2 hours of talk time.
• If you don't own a Technics EAH-AZ100 → AMAFACE Tiny. The kwmobile cover simply won't fit anything else.
In my opinion, these two aren't really competitors — they solve different problems, and the right pick depends entirely on what you already have. If you're starting from scratch and want earbuds plus a charging case in one go, I'd buy the AMAFACE Tiny. The battery setup, Bluetooth 5.3, and included accessories make it the more complete purchase. But if you already own a Technics EAH-AZ100 and just want to keep its charging case safe, I'd buy the kwmobile Earphones Case instead. It's the smarter, more focused choice for that specific job.
how to charge earbuds case
With the AMAFACE Tiny, you charge the case itself using the included USB Type-C cable, and a full charge takes about 1.5 hours. Once charged, the case refills the earbuds roughly 3 to 5 times. The kwmobile cover, by contrast, is only a protective shell — it doesn't charge anything.
how to charge case without earbuds
You can charge the AMAFACE Tiny case on its own by plugging in the USB Type-C cable — you don't need the earbuds inside. Just note the case charges the earbuds when they're docked, so leaving them out simply means they won't be topped up at the same time.
how to charge jlab earbuds case
That depends on the specific JLab model, and neither product here is a JLab case. The AMAFACE Tiny uses USB Type-C, while the kwmobile cover is made only for the Technics EAH-AZ100 and doesn't come with any charging hardware.
how to charge apple earbuds case
Apple cases use their own charging methods, and neither product in this comparison is designed for Apple earbuds. The AMAFACE Tiny charges via USB Type-C, and the kwmobile case fits only the Technics EAH-AZ100 charging case.
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