We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-01 · 6 min read · Independent comparison
If you want a two-pack of silicone covers with a dust-plug design and a carabiner for JBL Tune 130NC TWS earbuds, choose Seadream Silicone Case; if you need a single dark-green protective cover with both a carabiner and a wrist strap for Moondrop Pudding TWS earbuds, choose FJIASTB Case.
• Seadream Silicone Case — biggest strength: You get two cases (black and white) in one pack, a 360° soft-silicone shell with a charging-port dust plug, and a metal carabiner.
• Seadream Silicone Case — biggest trade-off: It fits only the JBL Tune 130NC TWS, so it is useless if you own a different model.
• FJIASTB Case — biggest strength: An integrated flip-cover design that won't fall off, plus a keychain and a wrist strap for carrying options.
• FJIASTB Case — biggest trade-off: You get one case in one color (dark green) and it is built only for the Moondrop Pudding TWS.
• Who each is for: Seadream suits JBL Tune 130NC owners who want a spare or a color swap; FJIASTB suits Moondrop Pudding owners who want a single, securely hinged cover with a strap.
The Seadream Silicone Case is a straightforward accessory: a soft silicone pouch made specifically for the JBL Tune 130NC TWS charging case. What stands out in the specs is the dust-plug detail at the bottom. That small flap keeps the charging port sealed when the case is sitting in a bag or pocket, which matters if you carry your earbuds loose with keys, coins or crumbs. The silicone is described as skin-friendly, odorless and lightweight, and the 360° coverage is meant to absorb bumps, drops and scratches rather than just look nice.
The practical touches are where this one earns its place. You can charge the earbuds from the bottom without pulling the cover off, and the wireless charging path isn't blocked. That sounds minor until you've owned a case you have to wrestle off every night. The included metal carabiner clips onto a handbag or backpack strap, so the earbuds travel with you instead of getting lost at the bottom of a tote. And because the pack includes two covers — one black, one white — you get a backup or a quick color change without buying twice. Installation is described as easy, and the whole thing weighs about 0.05 kg, so it barely adds bulk.
FJIASTB Case: Who It's For
The FJIASTB Case is a soft silicone cover made for the Moondrop Pudding TWS earbuds, finished in dark green with a nature-inspired pattern. Its headline feature is the integrated design: the flip cover is attached rather than a separate flap, so it won't accidentally fall off when you open and close the case. If you've ever had a hinged lid pop loose in a pocket, you know why that matters. The material is described as skin-friendly, waterproof and shockproof, and the slim-fit profile keeps the case from turning into a brick in your pocket.
Where it pulls ahead of a basic cover is the carry kit. You get the case itself, a keychain and a wrist strap. The wrist strap is the interesting part — it gives you a way to loop the case around your wrist or hang it from a hook, which is handy at the gym or on a walk. Charging doesn't require disassembly, so you can leave the cover on and plug in as usual. FJIASTB also states it provides 24-hour after-sales customer service, which is a reasonable thing to weigh if you want a brand that answers questions after the sale.
Who should buy it: Moondrop Pudding TWS owners who want a single, securely hinged cover with two different carrying options and a slimmer footprint. Who should skip it: anyone who doesn't own the Moondrop Pudding TWS, and anyone who wants multiple colors or a spare cover in the same purchase — this is one case, one color. In my opinion, the wrist strap and the integrated flip cover are the two reasons to pick this one over a generic sleeve.
• Best for two covers in one purchase → Seadream Silicone Case (black and white included).
• Best for charging-port dust protection → Seadream Silicone Case (dedicated dust plug at the bottom).
• Best for a strap-based carry setup → FJIASTB Case (keychain plus wrist strap included).
• Best for a lid that stays put → FJIASTB Case (integrated flip cover design).
• Best for a slimmer, low-profile feel → FJIASTB Case (slim-fit silicone, dark green).
• Best for JBL Tune 130NC TWS owners → Seadream Silicone Case (made only for that model).
• Best for Moondrop Pudding TWS owners → FJIASTB Case (made only for that model).
• Best value for a spare → Seadream Silicone Case, since two covers cover you if one gets lost or dirty.
If your earbuds are the JBL Tune 130NC TWS, I would buy the Seadream Silicone Case. Two covers in one purchase, a dust plug that keeps the charging port clean, and a carabiner that clips to a bag — that combination covers the realistic ways a case fails. If you own the Moondrop Pudding TWS, I would buy the FJIASTB Case instead: the integrated flip cover and the wrist strap are genuinely useful, and the slim dark-green shell looks less like bulk. In my opinion, the deciding factor is simply which earbuds you own, because neither case fits the other's model.
what is tws earbuds
TWS stands for "true wireless stereo" — earbuds that connect to each other and your phone with no wire between them. Both the JBL Tune 130NC TWS and the Moondrop Pudding TWS are TWS models, and each of these silicone cases is shaped specifically for one of those charging cases.
what is tws earbuds means
It means the two earbuds are completely independent, so there's no cable running behind your neck. Because the charging case is part of the package, the case gets the wear and tear — which is exactly what a silicone cover like the Seadream or FJIASTB is designed to absorb.
how much is tws earbuds
I don't quote prices here, and the cost of TWS earbuds varies widely by model and features. For these accessories specifically, the Seadream and FJIASTB cases are both budget-priced items, so check the current price on Amazon using the button on this page before you decide.
how to tws earbuds
Pairing is usually automatic: take the earbuds out of the charging case and they enter pairing mode, then select them in your phone's Bluetooth menu. The practical accessory tip is simpler — leave the protective cover on while charging, since both the Seadream and FJIASTB cases are designed to charge without being removed.
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