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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-19 · 6 min read · Independent comparison
If you want to add wireless charging and clip-on protection to the earbuds you already own, choose Bose Open Earbuds; if you need a full replacement charging case for 4th-generation AirPods that no longer hold a charge, choose Pyhsz Charging Case Replacement.
• Bose Open Earbuds — biggest strength: adds wireless charging and a soft silicone shell with a carabiner, purpose-built for the Bose Ultra Open Earbuds.
• Bose Open Earbuds — biggest trade-off: it is a cover, not a charger or a case replacement, and the silicone is listed as not water resistant.
• Pyhsz Charging Case Replacement — biggest strength: a complete replacement case that charges via USB-C or wirelessly, with fast-charge claims and a 2-year warranty.
• Pyhsz Charging Case Replacement — biggest trade-off: it only fits AirPods 4th generation, and earbuds and the Type-C cable are not included.
• Who each pick is for: Bose for existing Bose Ultra Open Earbuds owners who want protection and wireless charging; Pyhsz for AirPods 4 owners whose original case is lost, damaged or dead.
This is the Bose Ultra Open Earbuds Wireless Charging Case Cover, and the name tells you most of what you need to know. It is an accessory for a specific pair of earbuds — the Bose Ultra Open Earbuds — and its job is twofold: let you drop the case onto a wireless charging pad instead of plugging in a cable, and wrap the case in a soft silicone skin so it picks up fewer scratches and scuffs in a bag or pocket.
The details are deliberately simple. The shell is silicone, the theme is solid, the color is black, and the whole thing weighs 1.44 ounces with dimensions of 1.34 x 3.01 x 2.46 inches. There is a carabiner built into the design, which is the part I find most practical — you can clip the case to a backpack strap, a belt loop or a tote handle and stop digging around for it. Bose includes the case cover, the carabiner and a user manual in the box, and backs it with a 1-year manufacturer warranty.
Pyhsz Charging Case Replacement: Who It's For
The Pyhsz Charging Case Replacement solves a completely different problem. Your AirPods 4 earbuds are fine, but the case is lost, cracked or refuses to hold a charge — and buying a whole new set of earbuds feels wasteful. This is the white replacement case that gets you back to normal.
Compatibility is the headline, and it is strict. It fits the 4th-generation AirPods only, covering model numbers A3053, A3050, A3054, A3056, A3055 and A3057. Pyhsz states plainly that it is not compatible with 1st, 2nd, 3rd generation or Pro models, so check your model number before anything else. Charging works two ways: over USB-C or wirelessly. On speed, the listed numbers are specific — five minutes of charging gives about an hour of listening, a fully drained pair of earbuds takes roughly 30 minutes to top up, and the case itself needs about 2.5 hours to charge. A clear LED indicator shows how much capacity the case has left, which is the kind of small thing you miss once it is gone.
The Bluetooth side matters too. Pyhsz upgraded the chip and describes faster, more stable pairing, with the usual behavior you expect: after pairing, open the lid and lift an earbud and it connects. The shell is hard rather than soft, and the brand covers it with a 2-year warranty. Two things to note before buying: the earbuds and the Type-C cable are not included, so you are buying the case alone. This suits AirPods 4 owners who want to keep using the earbuds they already like, and it suits anyone who wants a hard-shell case with a longer warranty. Skip it if you own any other AirPods generation — the fit simply will not work.
Side-by-Side: Which Should You Choose?
• Best for wireless charging on an existing Bose case → Bose Open Earbuds. It upgrades the Ultra Open Earbuds case to wireless charging rather than replacing anything.
• Best for drop-and-scratch protection → Bose Open Earbuds. Soft silicone skin plus a clip-on carabiner.
• Best for fast top-ups → Pyhsz Charging Case Replacement. Five minutes for roughly an hour of listening, 30 minutes for a full earbud charge.
• Best for hard-shell durability → Pyhsz Charging Case Replacement. The shell is listed as hard, versus soft silicone on the Bose cover.
• Best warranty coverage → Pyhsz Charging Case Replacement. Two years versus one year from Bose.
• Best for carrying on a bag → Bose Open Earbuds. The carabiner is built for clipping to gear.
• Best for pairing reliability → Pyhsz Charging Case Replacement. The upgraded Bluetooth chip targets faster, more stable connections.
In my opinion these two products are not really rivals — they answer different questions, and the right one depends entirely on what you already own. If you have Bose Ultra Open Earbuds and want wireless charging plus a grippy silicone skin with a carabiner, I would buy the Bose cover; it is the tidy, purpose-built upgrade. If you have 4th-generation AirPods and the case is the broken part, I would buy the Pyhsz replacement, because a case with fast charging, dual charging options and a 2-year warranty is the smarter fix than replacing working earbuds. Check the current price on Amazon for whichever one matches your earbuds, and confirm your model number first.
No. It is a silicone cover that adds wireless charging and scratch protection to the Bose Ultra Open Earbuds case you already own. It does not replace the case itself.
Only with 4th-generation AirPods. Pyhsz lists compatibility with models A3053, A3050, A3054, A3056, A3055 and A3057, and states it is not compatible with 1st, 2nd, 3rd generation or Pro models.
No. You get the charging case only — earbuds and the Type-C charging cable are not included.
It depends on what you need. The Bose cover is the cheaper-looking fix for an existing Bose case, while the Pyhsz case replaces a whole charging case and carries a 2-year warranty. Compare the current prices on Amazon before deciding.
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