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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want a protective, lockable silicone cover that keeps your Anker Soundcore Space A40 charging case sealed shut and clipped to your bag, choose FIRE ROSE Secure Lock; if you need a water-resistant hard storage box that swallows IEMs, cables, eartips and small everyday items, choose KB EAR CCZ Taichi.
• FIRE ROSE Secure Lock — biggest strength: A lockable silicone shell with a metal carabiner and a reserved charging cutout, built specifically around the Anker Soundcore Space A40 charging case.
• FIRE ROSE Secure Lock — biggest trade-off: It is a cover only — it fits one specific model and it is not a storage box, so it will not hold extra cables or IEMs.
• KB EAR CCZ Taichi — biggest strength: A sealed TPU hard case with a PE-lined, shock-absorbing interior that stores a wide spread of IEMs, cables, eartips, memory cards and small accessories.
• KB EAR CCZ Taichi — biggest trade-off: It is a generic organizer, not a fitted cover, so it protects what you put inside rather than hugging one specific charging case.
• Who each pick is for: FIRE ROSE Secure Lock is for Space A40 owners who want drop and scratch protection on the case itself; KB EAR CCZ Taichi is for IEM users who want one tidy travel box for gear and small items.
The FIRE ROSE Secure Lock is a single-purpose accessory done in a very specific way. It is a silicone cover made for the Anker Soundcore Space A40 charging case, and the headline feature is the lockable design: the upper and lower halves of the shell clip together so the case cannot pop open on its own. If you have ever had a charging case hinge open in a pocket or at the bottom of a bag, that is exactly the scenario this design targets. The material is a soft silicone rubber with anti-slip, anti-scratch and impact-resistant properties, and it is deliberately thin — the point is protection without turning a pocketable case into a brick.
The second thing worth knowing is the fit. This is a precision-cut cover with a reserved charging port, so you can plug in and charge the Space A40 case without pulling the silicone off first. It also ships with a metal carabiner, which lets you hang the case off a belt loop, backpack strap or keychain instead of hunting for it in a bag. That combination — locked shut, clipped on, charged in place — is the whole value proposition, and it is a coherent one.
In my opinion, this is for the Space A40 owner who treats the charging case as the weak point of the setup: someone who commutes, hikes, or just drops things. Skip it if you own anything other than the Anker Soundcore Space A40, because the cutouts and locking geometry are made for that case and nothing else. Also skip it if what you actually want is somewhere to store spare eartips, cables or a second pair of IEMs — this is a cover, not a container. Note that the earbuds and the charging case themselves are not included; you are buying the silicone shell and the carabiner.
The KB EAR CCZ Taichi is a different category of product entirely. It is a portable IEM case — a hard box with a sealed TPU construction that resists moisture and dust, and a PE lining that provides elasticity and cushioning so impacts get absorbed rather than passed straight through to your gear. Weighing around 15 g, it is the kind of thing you throw in a travel bag or hang off a belt via its fixed rope without noticing it is there.
Where it earns its place is breadth. The Taichi is listed as suitable for a long list of IEMs — KZ ZS10 PRO, ZS12 PRO X, ZST, EDX PRO, CASTOR, CCA CRA, KBEAR KS1 and STORM, CCZ MELODY, and the Moondrop CHU II — plus headphone cables, eartips, charging cables, memory cards, flash drives, and even keys, watches and jewelry. That last part matters: this is as much a small-item organizer as it is an earphone case. If your daily carry is a tangle of loose IEMs, spare tips and a charging cable rattling around a backpack pocket, the Taichi is the fix.
This is for the IEM enthusiast or the frequent traveler who wants one compact, sealed box that keeps a wired setup and its accessories together and protected from damp and dust. Skip it if you specifically want a fitted, lockable cover for a True Wireless charging case — the Taichi does not grip your case, it contains it, and a Space A40 charging case is not what it was shaped around. It is also worth being clear that it is a bag-type form factor with a hard shell, so it adds a little bulk in exchange for real structural protection.
Side-by-Side: Which Should You Choose?
• Best for protecting a charging case in daily use → FIRE ROSE Secure Lock. The lockable silicone shell is designed to stop the case opening and to absorb scuffs and drops.
• Best for water and dust resistance → KB EAR CCZ Taichi. Its sealed TPU design is explicitly aimed at moisture and dust, which a silicone cover for a charging case is not.
• Best for charging without removing the cover → FIRE ROSE Secure Lock. The reserved charging port means you leave the silicone on and plug straight in.
• Best for hands-free carrying → FIRE ROSE Secure Lock. The included metal carabiner clips onto a bag, belt loop or keychain; the Taichi uses a fixed rope and is meant for a travel bag or belt.
• Best for shock absorption around fragile gear → KB EAR CCZ Taichi. The PE lining's cushioning is the feature doing that work, backed by a hard shell.
• Best for a single, exact-fit product → FIRE ROSE Secure Lock. It is made only for the Anker Soundcore Space A40, so the fit is the point.
• Best for a wired or mixed IEM setup → KB EAR CCZ Taichi. It is built for IEMs and their cables, not for one specific TWS charging case.
I would buy the FIRE ROSE Secure Lock if I owned an Anker Soundcore Space A40 and my real problem was the charging case popping open, getting scratched, or getting lost at the bottom of a bag. The lock plus carabiner plus charge-in-place cutout solves all three at once, and it does it with almost no added bulk. But if my problem were clutter and gear protection — several IEMs, spare tips, cables, a memory card — I would buy the KB EAR CCZ Taichi instead, because that is the job it was designed for. They are not really competitors so much as answers to two different headaches. Pick the one that matches yours.
how to charge earbuds case
It depends on the case. With the FIRE ROSE Secure Lock fitted, you do not need to remove the silicone cover — there is a reserved charging port cutout, so you plug your cable straight into the Anker Soundcore Space A40 charging case through the cover. The KB EAR CCZ Taichi is a storage box rather than a cover, so you would take the charging case out of it to charge.
how to charge case without earbuds
You charge the case by connecting a cable to its charging port; the earbuds do not need to be inside for the case itself to take a charge. With the FIRE ROSE Secure Lock, the port cutout is reserved precisely so the cover can stay on while the case charges. Just be aware that if the earbuds are out, they will not be topping up at the same time.
how to charge jlab earbuds case
The FIRE ROSE Secure Lock is not made for JLab — it is designed only for the Anker Soundcore Space A40 charging case, and the locking geometry and cutouts are specific to that model. For a JLab case you would need a cover made for JLab. The KB EAR CCZ Taichi is model-agnostic as a storage box, so it can hold small items and IEMs generally, but it is not a fitted cover for any specific charging case.
how to charge apple earbuds case
Neither product here is a charging solution. The FIRE ROSE Secure Lock is a silicone protective cover for the Anker Soundcore Space A40 case only, and the KB EAR CCZ Taichi is a water-resistant hard storage box for IEMs and small accessories. If you want to charge an Apple earbuds case, you use that case's own charging method — these two products simply are not part of that process.
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