The AirPods 4 case is small because Apple removed the speaker and simplified the internal layout

The charging case for AirPods 4 measures 2.4 by 2.1 by 0.9 inches — roughly the size of a lighter. Apple made it this compact by removing the speaker that was built into earlier AirPods Pro cases. That speaker let you play a sound to find your case if you lost it. Without it, there is straightforward less to fit inside the plastic shell.

The case also holds a smaller battery than the AirPods Pro case, because AirPods 4 themselves use less power. The earbuds last about 4 hours on a single charge, compared to 6 hours for AirPods Pro. A smaller battery means less weight and less volume needed to store it. Apple stacked the internal components more efficiently too — the charging contacts, the circuit board that manages power, and the battery all take up less total space when you do not have to leave room for a speaker mechanism.

Key Takeaways

  • The AirPods 4 case has no built-in speaker, which removes one of the larger components that took up space in earlier models.
  • AirPods 4 earbuds use less battery power than AirPods Pro, so the case battery can be smaller without losing charging capacity.
  • Apple redesigned the internal layout to pack components more tightly, reducing the overall footprint of the case.
  • The trade-off is that you cannot play a sound from the case to locate it if you misplace it — you would need to use Find My instead.

What the speaker did and why removing it saves space

The AirPods Pro charging case (both the original and the second generation) includes a small speaker on the bottom. When you open the Find My app on your iPhone and tap "Play Sound," that speaker emits a beeping noise to help you locate the case if it is sitting under a couch cushion or buried in a bag. It is a convenience feature, not essential to charging or pairing the earbuds.

That speaker, along with the wiring and amplifier needed to power it, takes up real estate inside the case. Removing it freed up enough space for Apple to shrink the overall dimensions. The AirPods 4 case relies entirely on the Find My app and Bluetooth to locate the earbuds themselves — the case is silent. For most people this is not a problem, because you can still see the case's location on a map in Find My, but it does mean you cannot hear it beeping if it is nearby but out of sight.

How battery size affects case dimensions

AirPods 4 earbuds are rated for about 4 hours of listening time per charge, while AirPods Pro last about 6 hours. That difference means the case does not need to store as much energy. A smaller battery is physically smaller — it takes up less volume and weighs less. The AirPods 4 case battery is 346 mAh, compared to 527 mAh in the AirPods Pro case. That is roughly a 35 percent reduction in capacity, which translates directly to a smaller physical component.

The case itself can provide multiple full charges before you need to plug it in. With AirPods 4, you get about 30 hours of total listening time across multiple charges from the case. With AirPods Pro, you get about 30 hours as well — so even though the case battery is smaller, the earbuds are more efficient, and the math works out similarly. The smaller battery is one reason the AirPods 4 case weighs 1.6 ounces, compared to 1.86 ounces for the AirPods Pro case.

Internal layout and component stacking

Inside the case, Apple has to fit a battery, a charging circuit board, metal contacts that touch the earbuds, and a hinge mechanism. The AirPods 4 case uses a more compact circuit board design that combines multiple functions into a single chip. This is partly possible because the case does not need to power a speaker or manage the audio output that the speaker required.

The charging contacts are also arranged more efficiently. In the AirPods 4 case, the metal pads that transfer power to the earbuds are positioned to minimize wasted space around them. The hinge that opens and closes the case is simpler in the AirPods 4 design, which also reduces the internal volume needed. These changes are small individually, but together they allow Apple to reduce the case footprint without sacrificing functionality.

What you gain and lose with the smaller case

The smaller size is a genuine advantage if you carry your AirPods in a pocket or a small bag. The case takes up less room and is easier to forget you are carrying — which is good for portability but bad if you actually do lose it. The lighter weight also means less bulk in your pocket.

The trade-off is the loss of the speaker. If your case is under a pile of clothes or wedged between car seats, you cannot make it beep to find it. You can still use Find My to see the case's location on a map, and you can play a sound from the AirPods themselves to locate them, but the case itself stays silent. For most people this is not a deal-breaker, but it is worth knowing if finding lost items by sound is important to you.

Why Apple chose this design for AirPods 4

Apple positions AirPods 4 as a more affordable entry point to the AirPods line, priced lower than AirPods Pro. Removing the speaker helped keep costs down — the speaker, amplifier, and associated wiring add to the manufacturing cost. A smaller battery also costs less to produce. By cutting these features, Apple could offer AirPods 4 at a lower price point while still delivering solid battery life and charging convenience.

The smaller case is also a side effect of this cost-focused design. It is not that Apple made the case small first and then removed features to fit it — rather, Apple removed features to reduce cost, and the case became smaller as a result. The design is efficient, but the primary driver was the price target, not the pursuit of miniaturization for its own sake.

Frequently Asked Questions

Can I make the AirPods 4 case beep if I lose it?

No, the AirPods 4 case has no speaker. You can use the Find My app to see the case's location on a map, or you can play a sound from the AirPods themselves to help locate them, but the case will not emit any sound. If finding lost items by sound is important to you, the AirPods Pro case with its built-in speaker may be a better choice.

Does the smaller case mean the AirPods 4 charge slower?

No, charging speed is not affected by case size. AirPods 4 charge at the same rate as AirPods Pro — about 15 minutes of charging in the case gives you roughly 1 hour of listening time. The smaller battery in the AirPods 4 case means it takes less total time to fully charge the case itself, but that is a benefit, not a drawback.

Is the AirPods 4 case durable if it is so thin?

Yes, the thin design does not compromise durability. The case is made of the same plastic materials as earlier AirPods cases and is designed to withstand normal use — drops from pocket height, pressure from being sat on, and exposure to dust. The thinness is a result of efficient internal design, not a reduction in material strength.

Will the smaller case fit in the same pockets and bags as the AirPods Pro case?

Yes, the AirPods 4 case is smaller and lighter, so it fits anywhere the AirPods Pro case does. It takes up less space, which is an advantage if you are packing light. The smaller size also means it is easier to misplace, since it is less noticeable in a bag or jacket pocket.